António O. S. S. Rangel

Full Professor

PhD degree in Biotechnology (specialisation in Chemistry) from the Faculty of Biotechnology of Universidade Católica Portuguesa, and a degree in Chemistry from University of Porto. António O. S. S. Rangel is a Full Professor at the Faculty of Biotechnology. His teaching activity involves general chemistry and analytical chemistry courses. He holds a PhD in Biotechnology (Chemistry specialization), and his research interests are mainly focused on the development of flow-based methods and microfluidic devices for the automation and miniaturization of (bio)chemical assays, with applications in the environmental, food, and biomedical sectors. He co-authored more than 170 indexed publications and was involved in the supervision of 19 PhD theses; he is member of the Editorial Advisory Board of the journal “Talanta”. He has been involved in various governance boards at ESB and UCP, and is presently President of the Scientific Board of ESB and member of the Direction Board of the CBQF Research Center.

Paper

Exploiting flow analysis as a tool for monitoring the leaching process of micronutrients using laboratory scale soil columns (LSSCs)

António O. S. S. Rangel (with Carolina F. F. A. Costa). 2020. Analytical Methods
Paper

Flow-based method for the determination of biomarkers urea and ammoniacal nitrogen in saliva

António O. S. S. Rangel (with Thepchuay, Y.). 2020. Bioanalysis
Paper

Greener and wide applicability range flow-based spectrophotometric method for iron determination in fresh and marine water

António O. S. S. Rangel (with Ribas, T.C.F.). 2020. Talanta
Paper

Integrated Flow-based System Displaying an In-line Mini Soil Column to Monitor Iron Species in Soils Leachates

António O. S. S. Rangel (with Mesquita, L.S.). 2020. Communications in Soil Science and Plant Analysis
Paper

Micro-PAD card for measuring total ammonia nitrogen in saliva

António O. S. S. Rangel (with Thepchuay, Y.). 2020. Analytical and Bioanalytical Chemistry
Paper

A sequential injection fluorimetric methodology with in-line solid phase extraction for biogenic amines screening in water

António O. S. S. Rangel (with Ribas, T.C.F.). 2019. International Journal of Environmental Analytical Chemistry
Paper

Automated analytical microsystem for the spectrophotometric monitoring of titratable acidity in white, rosé and red wines

António O. S. S. Rangel (with Natàlia Sández). 2019. Analytica Chimica Acta
Other

Determination of iron(III) in water samples by microsequential injection solid phase spectrometry using an hexadentate 3-hydroxy-4-pyridinone chelator as reagent

António O. S. S. Rangel (with Miranda, Joana L. A.). 2019.
Paper

Effects of soil sterilization and metal spiking in plant growth promoting rhizobacteria selection for phytotechnology purposes

António O. S. S. Rangel, Paula Castro & Sofia Pereira (with Moreira, Helena). 2019. Geoderma
Paper

New hydrophilic 3-hydroxy-4-pyridinone chelators with ether-derived substituents: Synthesis and evaluation of analytical performance in the determination of iron in waters

António O. S. S. Rangel (with Moniz, T.). 2019. Polyhedron
Paper

Understanding the Role of the Antioxidant System and the Tetrapyrrole Cycle in Iron Deficiency Chlorosis

António O. S. S. Rangel & Marta Vasconcelos (with Carla S. Santos). 2019. Plants
Other

A miniaturized chip in a multi-syringe flow system for spectrofluorimetric determination of iodide in urine samples

António O. S. S. Rangel (with Miranda, Joana L. A.). 2018.
Other

Analytical microsystem for the spectrophotometric determination of titratable acidity in wines

António O. S. S. Rangel (with Sandez, Natalia). 2018.
Other

Bromate determination in natural waters and soil leachates using sequential injection analysis

António O. S. S. Rangel (with Cerqueira, Ana S. G.). 2018.
Other

Design and assembly of microfluidic paper-based analytical devices (µPAD) for the quantification of nitrite and nitrate in saliva

António O. S. S. Rangel (with Ferreira, Francisca T. S. M.). 2018.
Other

Design and development of a microfuidic paper-based analytical device for calcium determination in saliva

António O. S. S. Rangel (with Acciainoli, Karina C.). 2018.
Other

Design and development of a mPAD device for magnesium determination in saliva

António O. S. S. Rangel (with Aguiar, Juliana I. S.). 2018.
Other

Design of microfluidic paper-based devices as disposable, easy-to-use solutions for onhand, real time analysis

António O. S. S. Rangel (with Mesquita, Raquel B. R.). 2018.
Other

Determination of titratable acidity in wines in an automatic spectrophotometric analytical microsystem

António O. S. S. Rangel (with Sandez, Natália). 2018.
Other

Determination of total phenolic content in wines using Folin-Ciocalteu assay in flow injection analysis system

António O. S. S. Rangel (with Wongpakdee, Thinnapong). 2018.
Other

Development of a flow analysis system for determination of phosphate in ground water

António O. S. S. Rangel (with Mesquita, Leticia S). 2018.
Other

Development of a flow-based system for the determination of protein content in microbiological samples

António O. S. S. Rangel (with Oliveira, Ricardo). 2018.
Other

Development of a sequential injection method for bromate determination in soil leachates

António O. S. S. Rangel (with Cerqueira, Ana S. G.). 2018.
Other

Exploring flow analysis tools for monitoring calcium and magnesium in soil leachates from laboratory scale soil columns (LSSCs)

António O. S. S. Rangel (with Costa, Carolina F. F.). 2018.
Other

Exploring specially designed solid interfaces for improved detection platforms in flow and micro-flow analysis

António O. S. S. Rangel (with Rangel, António O. S. S.). 2018.
Other

Flow based systems coupled to separation techniques applied to wine samples

António O. S. S. Rangel (with Vidigal, Susana S. M. P.). 2018.
Other

In-line phosphate pre-concentration in a flow injection method platform for monitoring fertilizers excess in soil leachates

António O. S. S. Rangel (with Mesquita, Letícia S). 2018.
Other

Interferences minimization using solid phase extraction in a multiparametric sequential injection system

António O. S. S. Rangel (with Ribas1, Tânia C. F.). 2018.
Other

Membrane-based Separation in Flow Analysis for Environmental and Food Applications

António O. S. S. Rangel (with Santos, Inês C.). 2018.
Other

Merging zones approach in a flow-based platform for the determination of the total protein content in microbiological samples

António O. S. S. Rangel (with Oliveira, Ricardo). 2018.
Other

Microfluidic paper-based analytical device (µPAD) for salivar ammonia/ammonium

António O. S. S. Rangel (with Thepchuay, Yanisa). 2018.
Other

Microfluidic paper-based analytical device for the determination of salivary calcium

António O. S. S. Rangel (with Silva, Mafalda T. S.). 2018.
Other

Microfluidic Paper-based Analytical Devices (µPADs) for the Determination of Total Ammonia Nitrogen in Saliva

António O. S. S. Rangel (with Thepchuai, Yanisa). 2018.
Other

Microfluidic paper-based analytical devices for the determination of salivary NOx

António O. S. S. Rangel (with Ferreira, Francisca T. S. M.). 2018.
Other

Microfluidic paper-based devices as disposable, easy-to-use, real time quantification methods

António O. S. S. Rangel (with Mesquita, Raquel B. R.). 2018.
Other

Monitoring soil/water interface: development of an integrated sequential injection system applied to laboratory scale soli core column and micro soil column

António O. S. S. Rangel (with Mesquita, Letícia S.). 2018.
Other

Monitoring the impact of fertilizers on soil leachates using sequential injection analysis for multiparametric determination

António O. S. S. Rangel (with Costa, Carolina F. F. A.). 2018.
Other

New hydrophilic 3-hydroxy-4-pyridinone chelators with ether-derived substituents: synthesis and evaluation of analytical performance in the determination of iron in waters

António O. S. S. Rangel (with Moniz, Tânia). 2018.
Other

Polymer inclusion membranes (PIMs) as an alternative for on-line solid phase extraction (SPE) in flow analysis

António O. S. S. Rangel (with Ribas, Tânia C. F.). 2018.
Other

Protein-phenolic interaction as a strategy to reduce the precursors of volatile phenolics in wine

António O. S. S. Rangel & José António Couto (with Vidigal, Susana S. M. P.). 2018. Analítica 2018 - 9th Meeting of Division of Analytical Chemistry
Other

Sequential flow injection analysis with potentiometric detection for the determination of ammonium and urea in human saliva

António O. S. S. Rangel (with Thepchuay, Yanisa). 2018.
Paper

Sequential injection system with in-line solid phase extraction and soil mini-column for determination of zinc and copper in soil leachates

António O. S. S. Rangel (with Paluch, J.). 2018. Talanta
Other

Sequential injection system with in-line solid phase extraction and soil minicolumn for determination of zinc and copper in soil leachates

António O. S. S. Rangel (with Paluch, Justyna). 2018.
Other

Specially designed hydrophilic 3,4-HPO chelators to be used as chromogenic reagents for iron in a microfluidic paper-based analytical device

António O. S. S. Rangel (with Moniz, Tânia.). 2018.
Other

Spectrofluorimetric determination of iodide in urine samples without pretreatment using a miniaturized analyzer chip in a multi-syringe flow system

António O. S. S. Rangel (with Miranda, Joana L. A.). 2018.
Other

Study of 3,4-hydroxypyridinones functionalized beads for iron (III) determination in a microsequential injection solid phase spectrophotometry mode

António O. S. S. Rangel (with Miranda, Joana L. A.). 2018.
Other

Use of solid-phase extraction in a sequential injection mode for the determination of micronutrients

António O. S. S. Rangel (with Ribas, Tânia C F.). 2018.
Other

A flow-based platform for measuring the acidity parameters in wine

António O. S. S. Rangel (with Vidigal, Susana S. M. P.). 2017. Talanta
Paper

A solid phase extraction flow injection spectrophotometric method for the zinc determination in plants

António O. S. S. Rangel (with Ribas, T.C.F.). 2017. Microchemical Journal
Other

Applications of solid phase extraction and functionalized sorbent materials in flow analysis

António O. S. S. Rangel (with Rangel, António O.S.S.). 2017.
Paper

Assessment of culturable bacterial endophytic communities colonizing Canna flaccida inhabiting a wastewater treatment constructed wetland

António O. S. S. Rangel, Paula Castro & Sofia Pereira (with Calheiros, C.S.C.). 2017. Ecological Engineering
Other

Assessment of the impact synthetic Fe(III)-chelates amendment in soil microbial community dynamics

António O. S. S. Rangel (with Machado, Ana). 2017.
Other

Determination of the thermodynamic binding constants of hydroxycinnamic acids with BSA using a flow-based approach with fluorimetric detection

António O. S. S. Rangel (with Vidigal, Susana S. M. P.). 2017.
Other

Evaluation of the impact of fertilizers on soil and soil leachates – chemical composition and microbial community assemblage

António O. S. S. Rangel (with Costa, Carolina). 2017.
Other

Impact of iron amendment on soil bacterial abundance and diversity

António O. S. S. Rangel (with Machado, A.). 2017.
Other

Measurement of iron (III) in waters by microsequential solid phase spectrometry using an hexadentate 3-hydroxy-4-pyridinone chelatr as a coulor reagent

António O. S. S. Rangel (with Miranda, Joana L. A.). 2017.
Paper

Microsequential injection lab-on-valve system for the spectrophotometric bi-parametric determination of iron and copper in natural waters

António O. S. S. Rangel (with González, A.). 2017. Talanta
Other

Polymer inclusion membranes (PIMs) as an alternative solid phase extraction (SPE) material: Comparison studies between batch and flow procedure

António O. S. S. Rangel (with Ribas, Tânia C. F.). 2017.
Other

Sequential injection system with in-line solid phase mini-column extraction for zinc and copper determiantion

António O. S. S. Rangel (with Paluch, Justyna). 2017.
Other

Soil/Water interface assessment using sequential injection for multiparametric analysis

António O. S. S. Rangel (with Mesquita, Raquel B. R.). 2017.
Other

Study of the interaction of hydroxycinnamic acids with different proteins

António O. S. S. Rangel & José António Couto (with Couto, J. A.). 2017. Microbiotec’17 Congress, Porto, Portugal, 7-9 December 17
Other

A flow-based platform for measuring the acidity parameters in wine

António O. S. S. Rangel (with Vidigal, Susana S. M. P.). 2016.
Other

A solid phase extraction flow injection methodology with spectrophotometric detection for the zinc determination in plant digests

António O. S. S. Rangel (with Ribas, Tânia C. F.). 2016.
Paper

A total analytical system featuring a novel solid–liquid extraction chamber for solid sample flow analysis

António O. S. S. Rangel (with Galvis-Sánchez, A.C.). 2016. Analytical and Bioanalytical Chemistry
Other

A view on the strengths and limitations of flow-based approaches for food and environmental monitoring

António O. S. S. Rangel (with Rangel, António O. S. S.). 2016.
Other

Construction of an Iron (III) selective electrode with a rhodamine-based newly synthesized chelator

António O. S. S. Rangel (with Mesquita, Letícia). 2016.
Other

Corrigendum to "Use of solid phase extraction for the sequential injection determination of alkaline phosphatase activity in dynamic water systems"

António O. S. S. Rangel (with Santos, Inês C.). 2016.
Other

Developing integrated flow analysis tools to monitor the soil-water interface: Application to laboratory scale soil columns (LSSC)

António O. S. S. Rangel (with Mesquita, Raquel B. R.). 2016.
Paper

Development of a low pressure chromatographic flow system for monitoring the biodegradation of ofloxacin and ciprofloxacin

António O. S. S. Rangel & Paula Castro (with Santos, I.C.). 2016. Analytical Methods
Paper

Effect of tris(3-hydroxy-4-pyridinonate) iron(III) complexes on iron uptake and storage in soybean (Glycine max L.)

António O. S. S. Rangel & Marta Vasconcelos (with Carla S. Santos). 2016. Plant Physiology and Biochemistry
Paper

Erratum: Use of solid phase extraction for the sequential injection determination of alkaline phosphatase activity in dynamic water systems (Talanta (2012) 98 (203-210))

António O. S. S. Rangel (with Santos, I.C.). 2016. Talanta
Paper

Exploiting near infrared spectroscopy as an analytical tool for on-line monitoring of acidity during coffee roasting

António O. S. S. Rangel (with Santos, J.R.). 2016. Food Control
Other

Exploring newly synthetsized iron chelators for development of in situ devices

António O. S. S. Rangel (with Mesquita, Raquel B. R.). 2016.
Other

Flow-based Strategies for the determination of total acidity in wine

António O. S. S. Rangel (with Vidigal, Susana S. M. P.). 2016.
Other

Flow-Based System for the Determination of Titratable Acidity in Wines

António O. S. S. Rangel (with Vidigal, Susana S. M. P.). 2016. Food Analytical Methods
Paper

In-line monitoring of the coffee roasting process with near infrared spectroscopy: Measurement of sucrose and colour

António O. S. S. Rangel (with Santos, J.R.). 2016. Food Chemistry
Other

Iron speciation in natural waters by sequential injection analysis with a hexadentate 3-hydroxy-4-pyridinone chelator as chromogenic agent

António O. S. S. Rangel (with Miranda, Joana). 2016. Talanta
Other

Micro-SI system for the spectrophotometric bi-parametric determination of iron and copper in soil leachates

António O. S. S. Rangel (with González, Alba). 2016.
Paper

Mine land valorization through energy maize production enhanced by the application of plant growth-promoting rhizobacteria and arbuscular mycorrhizal fungi

António O. S. S. Rangel, Paula Castro & Sofia Pereira (with Moreira, Helena). 2016. Environmental Science and Pollution Research
Other

Primary amines in natural waters: Sequential injection methodology for its fluorescent detection

António O. S. S. Rangel (with Ribas, Tânia C. F.). 2016.
Paper

Seasonal monitoring of inland bathing waters using a sequential injection method as a fast and effective tool for nutrient quantification (N : P)

António O. S. S. Rangel (with Mesquita, R.B.R.). 2016. Analytical Methods
Paper

Selection of metal resistant plant growth promoting rhizobacteria for the growth and metal accumulation of energy maize in a mine soil -Effect of the inoculum size

António O. S. S. Rangel, Paula Castro & Sofia Pereira (with Moreira, H.). 2016. Geoderma
Other

Selection of metal resistant plant growth promoting rhizobacteria for the growth and metal accumulation of energy maize in a mine soil — Effect of the inoculum size

António O. S. S. Rangel (with Moreira, Helena). 2016.
Paper

Selection of metal resistant plant growth promoting rhizobacteria for the growth and metal accumulation of energy maize in a mine soil — Effect of the inoculum size

António O. S. S. Rangel & Sofia Pereira (with Helena Moreira). 2016. Geoderma
Other

Use of on-line solid phase extraction and a multi-reflection flow cell coupled with a LED for the spectrophotometric determination of zinc: application to plant digests

António O. S. S. Rangel (with Ribas, Tânia C. F.). 2016.
Other

Use of the iodine-starch chemistry for the flow injection determination of free sulphur dioxide in wine

António O. S. S. Rangel (with Lemos, Beatriz A.). 2016.
Other

A reagentless flow injection system for the quantification of ethanol in beverages based on the schlieren effect measurement

António O. S. S. Rangel (with Vidigal, Susana S.M.P.). 2015. Microchemical Journal
Other

An experimental approach to perform solid liquid extraction in flow systems

António O. S. S. Rangel (with Santos, Inês C.). 2015.
Paper

Constructed wetland with a polyculture of ornamental plants for wastewater treatment at a rural tourism facility

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2015. Ecological Engineering
Book

Determination of Caffeine in Coffee Using Low-Pressure Chromatography

António O. S. S. Rangel (with Santos, J.R.). 2015. Coffee in Health and Disease Prevention
Paper

Determination of noncovalent binding using a continuous stirred tank reactor as a flow injection device coupled to electrospray ionization mass spectrometry

António O. S. S. Rangel (with Santos, I.C.). 2015. Journal of the American Society for Mass Spectrometry
Other

Development of a chromatographic low pressure flow injection system using amperometric detection: Application to the analysis of niacin in coffee

António O. S. S. Rangel (with Santos, João Rodrigo). 2015. Food Chemistry
Other

Exploring 3-hydroxy-4-pyridinone chelators synthetic versatility to attain tailor made low toxicity chromogenic reagents for iron speciation in water samples

António O. S. S. Rangel (with Rangel, António O. S. S.). 2015.
Other

Flow injection coupled to electrospray ionization mass spectrometry for non-convalent binging determinations

António O. S. S. Rangel (with Santos, Inês C.). 2015.
Other

Flow-based system for the determination of titratable and volatile acidity in wines

António O. S. S. Rangel (with Rangel, António O. S. S.). 2015.
Other

Iodine speciation in coastal and inland bathing waters and seaweeds extracts using a sequential injection standard addition flow-batch method

António O. S. S. Rangel (with Santos, Inês C.). 2015. Talanta
Other

Iron speciation by microsequential injection solid phase spectrometry using 3-hydroxy-1(H)-2-methyl-4-pyridinone as chromogenic reagent

António O. S. S. Rangel (with Suárez, Ruth). 2015. Talanta
Other

MALDI-MS foe microorganism identification in contaminated groundwater

António O. S. S. Rangel (with Santos, Inês C.). 2015.
Other

Micro solid phase spectrophotometry in a sequential injection lab-on-valve platform for cadmium, zinc, and copper determination in freshwaters

António O. S. S. Rangel (with Santos, Inês). 2015. Analytica Chimica Acta
Paper

Paired-ion electrospray ionization - triple quadrupole tandem mass spectrometry for quantification of anionic surfactants in waters

António O. S. S. Rangel (with Santos, I.C.). 2015. Talanta
Other

Paired-ion electrospray ionization – triple quadrupole tandem mass spectrometry for quantification of anionic surfactants in waters

António O. S. S. Rangel (with Santos, Inês). 2015.
Paper

Removal of fluoxetine and its effects in the performance of an aerobic granular sludge sequential batch reactor

António O. S. S. Rangel & Paula Castro (with Moreira, I.S.). 2015. Journal of Hazardous Materials
Other

Screening of cadmium and lead in potentially contaminated waters using a spectrophotometric sequential injection lab-on-valve methodology

António O. S. S. Rangel (with Santos, Inês C.). 2015. Talanta
Other

Sequential injection application of an expressly designed 3-hydroxy-4-pyridinone funcionalized with a polyethylene glycol chain for the spectrophotometric determination of iron

António O. S. S. Rangel (with Rangel, António O. S. S.). 2015.
Other

Solid Phase Extraction in Flow Analysis Platforms

António O. S. S. Rangel (with Rangel, António O. S. S.). 2015.
Other

Standard addition flow method for potentiometric measurements at low concentration levels: Application to the determination of fluoride in food samples

António O. S. S. Rangel (with Galvis-Sánchez, Andrea C.). 2015. Talanta
Other

Synthesis and characterization of a 3-hydroxy-4-pyridinone chelator functionalized with a polyethylene glycol (PEG) chain aimed at sequential injection determination of iron in natural waters

António O. S. S. Rangel (with Mesquita, Raquel). 2015. Polyhedron
Other

The State of the Art of Flow-Through Solid-Phase Spectrometry

António O. S. S. Rangel (with Santos, Inês C.). 2015.
Book

Use of Near-Infrared Spectroscopy for Coffee Beans Quality Assessment

António O. S. S. Rangel (with Páscoa, R.N.M.J.). 2015. Coffee in Health and Disease Prevention
Other

Use of UV radiation for the sequential injection spectrophotometric determination of NOx in natural waters

António O. S. S. Rangel (with Rangel, António O. S. S.). 2015.
Other

A flow injection system coupled to a micro-guard cartridge for monitoring a vinification process

António O. S. S. Rangel (with Vidigal, Susana). 2014.
Other

A flow system for the quantification of ethanol in beverages based on shlieren effect measurement

António O. S. S. Rangel (with Vidigal, Susana). 2014.
Paper

A flow-injection system coupled to a micro-guard cartridge for monitoring a vinification process

António O. S. S. Rangel (with Vidigal, S.S.M.P.). 2014. Analytical Sciences
Other

Constructed wetland implemented in a tourism unit for wastewater treatment

António O. S. S. Rangel (with Calheiros, Cristina C. S.). 2014.
Paper

Constructed Wetlands for Tannery Wastewater Treatment in Portugal: Ten Years of Experience

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2014. International Journal of Phytoremediation
Other

Contributions to separation processes for sample treatment in flow analysis

António O. S. S. Rangel (with Rangel, António O. S. S.). 2014.
Other

Determinação de trigonelina em café por cromatografia líquida de baixa pressão e detecção electroquímica

António O. S. S. Rangel (with Santos, J. R.). 2014.
Other

Development of a sequential injection methodology for iron speciation in waters using an hexadentate 3,4 – hydroxypiridinone chelator

António O. S. S. Rangel (with Miranda, Joana L. A.). 2014.
Other

Development of a solid-liquid extraction chamber for flow systems

António O. S. S. Rangel (with Galvis-Sanchez, Andrea C.). 2014.
Other

Exploiting Near Infrared Spectroscopy as an Analytical Tool for Coffee Roasting On-Line Monitoring

António O. S. S. Rangel (with Santos, J. R.). 2014.
Other

Exploiting near infrared spectroscopy as ana analystical tool for coffee roasting on-line monitoring. Application in the acidity determination

António O. S. S. Rangel (with Lopo, Miguel). 2014.
Other

Exploring 3-hydroxy-4-piridinone chelators as low toxicity chromogenic reagents for iron determination in natural waters

António O. S. S. Rangel (with Mesquita, Raquel). 2014.
Other

Flow analysis approaches to handle saline samples

António O. S. S. Rangel (with Rangel, António O. S. S.). 2014.
Other

Greener alternative for the inline nitrate reduction in the sequential injection determination of NOx in natural waters

António O. S. S. Rangel (with Machado, Ana). 2014.
Other

Microplate and flow injection strategies for the spectrophotometric detection of zinc (II) with two complexng agents: PAR and Zincon

António O. S. S. Rangel (with Ribas, Tânia C. F.). 2014.
Other

Monitoring a Dynamic System with a Low Pressure Liquid Chromatography System: Application to a Vinification Process

António O. S. S. Rangel (with Vidigal, Susana). 2014.
Paper

Performance of aerobic granular sludge in a sequencing batch bioreactor exposed to ofloxacin, norfloxacin and ciprofloxacin

António O. S. S. Rangel & Paula Castro (with Amorim, C.L.). 2014. Water Research
Other

Phytomanagement of Cd-contaminated soils using maize (Zea mays L.) assisted by plant growth-promoting rhizobacteri

António O. S. S. Rangel (with Moreira, Helena). 2014.
Paper

Phytomanagement of Cd-contaminated soils using maize (Zea mays L.) assisted by plant growth-promoting rhizobacteria

António O. S. S. Rangel & Paula Castro (with Moreira, H.). 2014. Environmental Science and Pollution Research
Other

Quantificação de etanol em diferentes tipos de bebidas alcoólicas usando sistemas de fluxo

António O. S. S. Rangel (with Vidigal, Susana). 2014.
Other

Sequential Injection Method for Iron Determination using an Hexadentate 3,4 – Hydroxypridinone Chelator

António O. S. S. Rangel (with Miranda, Joana L. A.). 2014.
Other

Sequential injection method for iron speciation in natural waters using an hexadentate 3,4-HPO ligand

António O. S. S. Rangel (with Miranda, Joana L. A.). 2014.
Other

Solid phase spectrometry for copper, zinc and cadmium determination in natural waters using a SI-LOV system

António O. S. S. Rangel (with Santos, Inês C.). 2014.
Other

Solid phase spectrometry in a micro SIA system for cadmium and lead determination

António O. S. S. Rangel (with Santos, Inês C.). 2014.
Other

Use of 3,4 HPO Chelators for as Nontoxic Reagents for the Determination of Iron

António O. S. S. Rangel (with Mesquita, Raquel). 2014.
Book Chapter

Use of near infrared spectroscopy for coffee beans quality assessment

António O. S. S. Rangel (with Páscoa, Ricardo N.M.J.). 2014.
Paper

Application of Mid- and Near-Infrared Spectroscopy for the Control and Chemical Evaluation of Brine Solutions and Traditional Sea Salts

António O. S. S. Rangel (with Galvis-Sánchez, A.C.). 2013. Food Analytical Methods
Paper

Authenticity Control of Roasted Coffee Brands Using Near-Infrared Spectroscopy

António O. S. S. Rangel (with Sarraguça, M.C.). 2013. Food Analytical Methods
Paper

Erratum: Remediation of heavy metal contaminated soils: An overview of site remediation techniques (Critical Reviews in Environmental Science and Technology (2011) 41:10 (879-914) DOI: 10.1080/10643380903299517)

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2013. Critical Reviews in Environmental Science and Technology
Paper

Exploiting the use of 3,4-HPO ligands as nontoxic reagents for the determination of iron in natural waters with a sequential injection approach

António O. S. S. Rangel (with Mesquita, R.B.R.). 2013. Talanta
Paper

Flow-injection spectrophotometric determination of bromate in bottled drinking water samples using chlorpromazine reagent and a liquid waveguide capillary cell

António O. S. S. Rangel (with Tóth, I.). 2013. Analytical Sciences
Paper

Inoculating Helianthus annuus (sunflower) grown in zinc and cadmium contaminated soils with plant growth promoting bacteria - Effects on phytoremediation strategies

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2013. Chemosphere
Paper

Performance of an aerobic granular sequencing batch reactor fed with wastewaters contaminated with Zn<sup>2+</sup>

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2013. Journal of Environmental Management
Book

Sea salt

António O. S. S. Rangel (with Galvis-Sánchez, A.C.). 2013. Comprehensive Analytical Chemistry
Paper

Sequential injection lab-on-valve platform as a miniaturisation tool for solid phase extraction

António O. S. S. Rangel (with Vidigal, S.S.M.P.). 2013. Analytical Methods
Paper

Sequential injection methodology for carbon speciation in bathing waters

António O. S. S. Rangel (with Santos, I.C.). 2013. Analytica Chimica Acta
Paper

Sequential injection system for the enzymatic determination of ethanol in alcoholic beverages with in-line dilution

António O. S. S. Rangel (with Pais, T.F.M.). 2013. Food Control
Paper

Automated solid-phase spectrophotometric system for optosensing of bromate in drinking waters

António O. S. S. Rangel (with Oliveira, S.M.). 2012. Analytical Methods
Paper

Determination of total protein content in white wines by solid phase spectrometry in a SI-LOV system

António O. S. S. Rangel (with Vidigal, S.S.M.P.). 2012. Talanta
Paper

Development of a chromatographic low pressure flow injection system: Application to the analysis of methylxanthines in coffee

António O. S. S. Rangel (with Santos, J.R.). 2012. Analytica Chimica Acta
Paper

Development of a Turbidimetric Sequential Injection System to Monitor the Codfish Desalting Process

António O. S. S. Rangel (with Santos, I.C.). 2012. Food Analytical Methods
Paper

Evaluation of green coffee beans quality using near infrared spectroscopy: A quantitative approach

António O. S. S. Rangel (with Santos, J.R.). 2012. Food Chemistry
Paper

Review on recent applications of the liquid waveguide capillary cell in flow based analysis techniques to enhance the sensitivity of spectroscopic detection methods

António O. S. S. Rangel (with Páscoa, R.N.M.J.). 2012. Analytica Chimica Acta
Paper

Sequential injection system exploring the standard addition method for phosphate determination in high salinity samples: Interstitial, transitional and coastal waters

António O. S. S. Rangel (with Mesquita, R.B.R.). 2012. Analytical Methods
Paper

Use of solid phase extraction for the sequential injection determination of alkaline phosphatase activity in dynamic water systems

António O. S. S. Rangel (with Santos, I.C.). 2012. Talanta
Paper

Development of a flow method for the determination of phosphate in estuarine and freshwaters-Comparison of flow cells in spectrophotometric sequential injection analysis

António O. S. S. Rangel (with Mesquita, R.B.R.). 2011. Analytica Chimica Acta
Paper

Development of a sequential injection gas diffusion system for the determination of ammonium in transitional and coastal waters

António O. S. S. Rangel (with Segundo, R.A.). 2011. Analytical Methods
Paper

Development of flow injection potentiometric methods for the off-line and on-line determination of fluoride to monitor the biodegradation of a monofluorophenol in two bioreactors

António O. S. S. Rangel & Paula Castro (with Mesquita, R.B.R.). 2011. Talanta
Paper

Exploiting the bead injection LOV approach to carry out spectrophotometric assays in wine: Application to the determination of iron

António O. S. S. Rangel (with Vidigal, S.S.M.P.). 2011. Talanta
Paper

Fourier transform near-infrared spectroscopy application for sea salt quality evaluation

António O. S. S. Rangel (with Galvis-Sánchez, A.C.). 2011. Journal of Agricultural and Food Chemistry
Paper

Heavy metal accumulation in plant species indigenous to a contaminated Portuguese site: Prospects for phytoremediation

António O. S. S. Rangel & Paula Castro (with Moreira, H.). 2011. Water, Air, and Soil Pollution
Paper

Monitoring sodium chloride during cod fish desalting process by flow injection spectrometry and infrared spectroscopy

António O. S. S. Rangel (with Galvis-Sánchez, A.C.). 2011. Food Control
Paper

Remediation of heavy metal contaminated soils: An overview of site remediation techniques

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2011. Critical Reviews in Environmental Science and Technology
Paper

Spectrophotometric determination of bromate in water using multisyringe flow injection analysis

António O. S. S. Rangel (with Oliveira, S.M.). 2011. Analytical Letters
Paper

Spectrophotometric determination of zinc and copper in a multi-syringe flow injection analysis system using a liquid waveguide capillary cell: Application to natural waters

António O. S. S. Rangel (with Páscoa, R.N.M.J.). 2011. Talanta
Paper

Spectrophotometric sensor system based on a liquid waveguide capillary cell for the determination of titanium: Application to natural waters, sunscreens and a lake sediment

António O. S. S. Rangel (with Páscoa, R.N.M.J.). 2011. Sensors and Actuators, B: Chemical
Paper

Assessment of the plant growth promotion abilities of six bacterial isolates using Zea mays as indicator plant

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2010. Soil Biology and Biochemistry
Paper

Sequential injection kinetic flow assay for monitoring glycerol in a sugar fermentation process by Saccharomyces cerevisiae

António O. S. S. Rangel & Isabel Vasconcelos (with Domínguez, K.B.H.). 2010. Applied Biochemistry and Biotechnology
Paper

Sequential injection lab-on-valve system for the determination of the activity of peroxidase in vegetables

António O. S. S. Rangel (with Vidigal, S.S.M.P.). 2010. Journal of Agricultural and Food Chemistry
Paper

Simultaneous determination of tartaric acid and potassium in wines using a multicommuted flow system with dialysis

António O. S. S. Rangel (with Oliveira, S.M.). 2010. Talanta
Paper

A multi-syringe flow injection system for the spectrophotometric determination of trace levels of iron in waters using a liquid waveguide capillary cell and different chelating resins and reaction chemistries

António O. S. S. Rangel (with Páscoa, R.N.M.J.). 2009. Microchemical Journal
Paper

A review on sequential injection methods for water analysis

António O. S. S. Rangel (with Mesquita, R.B.R.). 2009. Analytica Chimica Acta
Paper

Arsenic, lead and nickel accumulation in Rubus ulmifolius growing in contaminated soil in Portugal

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2009. Journal of Hazardous Materials
Paper

Cell membrane damage induced by phenolic acids on wine lactic acid bacteria

António O. S. S. Rangel, José António Couto & Tim Hogg (with Campos, F.M.). 2009. International Journal of Food Microbiology
Paper

Changes in the bacterial community structure in two-stage constructed wetlands with different plants for industrial wastewater treatment

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2009. Bioresource Technology
Paper

Determination of ammonium in marine waters using a gas diffusion multicommuted flow injection system with in-line prevention of metal hydroxides precipitation

António O. S. S. Rangel (with Oliveira, S.M.). 2009. Journal of Environmental Monitoring
Paper

Development of a gas diffusion multicommuted flow injection system for the determination of sulfur dioxide in wines, comparing malachite green and pararosaniline chemistries

António O. S. S. Rangel (with Oliveira, S.M.). 2009. Journal of Agricultural and Food Chemistry
Paper

Development of a sequential injection system for the determination of nitrite and nitrate in waters with different salinity: Application to estuaries in NW Portugal

António O. S. S. Rangel (with Mesquita, R.B.R.). 2009. Analytical Methods
Paper

Interfacing multisyringe flow injection analysis to flame atomic emission spectrometry: An intelligent system for automatic sample dilution and determination of potassium

António O. S. S. Rangel (with Almeida, M.I.G.S.). 2009. Journal of Analytical Atomic Spectrometry
Paper

Remediation of heavy metal contaminated soils: Phytoremediation as a potentially promising clean-Up technology

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2009. Critical Reviews in Environmental Science and Technology
Paper

Sequential injection lab-on-valve system for the on-line monitoring of hydrogen peroxide in lens care solutions

António O. S. S. Rangel (with Vidigal, S.S.M.P.). 2009. Microchemical Journal
Paper

Sequential injection trace determination of iron in natural waters using a long-pathlength liquid core waveguide and different spectrophotometric chemistries

António O. S. S. Rangel (with Páscoa, R.N.M.J.). 2009. Limnology and Oceanography: Methods
Paper

Substrate effect on bacterial communities from constructed wetlands planted with Typha latifolia treating industrial wastewater

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2009. Ecological Engineering
Paper

Treatment of industrial wastewater with two-stage constructed wetlands planted with Typha latifolia and Phragmites australis

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2009. Bioresource Technology
Paper

Application of manure and compost to contaminated soils and its effect on zinc accumulation by Solanum nigrum inoculated with arbuscular mycorrhizal fungi

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2008. Environmental Pollution
Book

Chapter 18 Food, Beverages and Agricultural Applications

António O. S. S. Rangel (with Tóth, I.). 2008. Comprehensive Analytical Chemistry
Paper

Development of sequential injection methodologies for the spectrophotometry direct and kinetic determination of aluminium in natural and waste waters

António O. S. S. Rangel (with Mesquita, R.B.R.). 2008. Journal of the Brazilian Chemical Society
Paper

Direct introduction of slurry samples in multi-syringe flow injection analysis: Determination of potassium in plant samples

António O. S. S. Rangel (with Almeida, M.I.G.S.). 2008. Analytical Sciences
Paper

EDDS and EDTA-enhanced zinc accumulation by solanum nigrum inoculated with arbuscular mycorrhizal fungi grown in contaminated soil

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2008. Chemosphere
Paper

Evaluation of different substrates to support the growth of Typha latifolia in constructed wetlands treating tannery wastewater over long-term operation

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2008. Bioresource Technology
Paper

Sequential injection-LOV format for peak height and kinetic measurement modes in the spectrophotometric enzymatic determination of ethanol: Application to different alcoholic beverages

António O. S. S. Rangel (with Vidigal, S.S.M.P.). 2008. Talanta
Paper

Spectrophotometric flow system using vanadomolybdophosphate detection chemistry and a liquid waveguide capillary cell for the determination of phosphate with improved sensitivity in surface and ground water samples

António O. S. S. Rangel (with Neves, M.S.A.C.). 2008. Talanta
Paper

The effects of tannery wastewater on the development of different plant species and chromium accumulation in Phragmites australis

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2008. Archives of Environmental Contamination and Toxicology
Paper

A multi-commuted flow injection system with a multi-channel propulsion unit placed before detection: Spectrophotometric determination of ammonium

António O. S. S. Rangel (with Oliveira, S.M.). 2007. Analytica Chimica Acta
Paper

Automatic flow system for sequential determination of ABTS{radical dot}<sup>+</sup> scavenging capacity and Folin-Ciocalteu index: A comparative study in food products

António O. S. S. Rangel (with Magalhães, L.M.). 2007. Analytica Chimica Acta
Paper

Constructed wetland systems vegetated with different plants applied to the treatment of tannery wastewater

António O. S. S. Rangel & Paula Castro (with Calheiros, C.S.C.). 2007. Water Research
Paper

Development of a flow injection method for monitoring cell membrane damage of wine lactic acid bacteria

António O. S. S. Rangel, José António Couto & Tim Hogg (with Torres, A.F.). 2007. Microchimica Acta
Paper

Effect of arsenic, lead and zinc on seed germination and plant growth in black nightshade (Solanum nigrum L.) vs. clover (Trifolium incarnatum L.)

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2007. Fresenius Environmental Bulletin
Paper

Sequential injection determination of nitrate in vegetables by spectrophotometry with inline cadmium reduction

António O. S. S. Rangel (with Oliveira, S.M.). 2007. Communications in Soil Science and Plant Analysis
Paper

Solanum nigrum grown in contaminated soil: Effect of arbuscular mycorrhizal fungi on zinc accumulation and histolocalisation

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2007. Environmental Pollution
Paper

Use of tetramethylbenzidine for the spectrophotometric sequential injection determination of free chlorine in waters

António O. S. S. Rangel (with Mesquita, R.B.R.). 2007. Talanta
Paper

Zinc accumulation in plant species indigenous to a Portuguese polluted site: Relation with soil contamination

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2007. Journal of Environmental Quality
Paper

Automatic method for the determination of Folin-Ciocalteu reducing capacity in food products

António O. S. S. Rangel (with Magalhães, L.M.). 2006. Journal of Agricultural and Food Chemistry
Paper

Determination of mercury in fish by cold vapor atomic absorption spectrophotometry using a multicommuted flow injection analysis system

António O. S. S. Rangel (with Silva, M.F.). 2006. Analytical Sciences
Paper

Determination of nitrate and nitrite in dairy samples by sequential injection using an in-line cadmium-reducing column

António O. S. S. Rangel (with Reis Lima, M.J.). 2006. International Dairy Journal
Paper

Multi-pumping flow system for the determination of dissolved orthophosphate and dissolved organic phosphorus in wastewater samples

António O. S. S. Rangel (with Pons, C.). 2006. Analytica Chimica Acta
Paper

Potentiometric multi-syringe flow injection system for determination of exchangeable potassium in soils with in-line extraction

António O. S. S. Rangel (with Almeida, M.I.G.S.). 2006. Microchemical Journal
Paper

Sequential injection system for the enzymatic determination of ethanol in wine

António O. S. S. Rangel (with Páscoa, R.N.M.J.). 2006. Journal of Agricultural and Food Chemistry
Paper

The application of multicommutated flow techniques to the determination of iron

António O. S. S. Rangel (with Pons, C.). 2006. TrAC - Trends in Analytical Chemistry
Paper

Turbidimetric and nephelometric flow analysis: Concepts and applications

António O. S. S. Rangel (with Morais, I.P.A.). 2006. Spectroscopy Letters
Paper

Zinc accumulation in Solanum nigrum is enhanced by different arbuscular mycorrhizal fungi

António O. S. S. Rangel & Paula Castro (with Marques, A.P.G.C.). 2006. Chemosphere
Paper

A double-line sequential injection system for the spectrophotometric determination of copper, iron, manganese, and zinc in waters

António O. S. S. Rangel (with Morais, I.P.A.). 2005. Journal of AOAC International
Paper

A new approach for the sequential injection spectrophotometric determination of the total antioxidant activity

António O. S. S. Rangel (with Lima, M.J.R.). 2005. Talanta
Paper

An overview on flow methods for the chemiluminescence determination of phosphorus

António O. S. S. Rangel (with Morais, I.P.A.). 2005. Talanta
Paper

Determination of ambroxol in an automated multi-pumping pulsed flow system

António O. S. S. Rangel (with Santos, J.L.M.). 2005. Analytical Sciences
Paper

Gas diffusion sequential injection system for the spectrophotometric determination of free chlorine with o-dianisidine

António O. S. S. Rangel (with Mesquita, R.B.R.). 2005. Talanta
Paper

Multi-syringe flow injection system for the determination of available phosphorus in soil samples

António O. S. S. Rangel (with Almeida, M.I.G.S.). 2005. International Journal of Environmental Analytical Chemistry
Paper

Sample introduction in multi-syringe flow injection systems: Comparison between time-based and volume-based strategies

António O. S. S. Rangel (with Segundo, M.A.). 2005. Analytica Chimica Acta
Paper

Spectrophotometric determination of iron and boron in soil extracts using a multi-syringe flow injection system

António O. S. S. Rangel (with Gomes, D.M.C.). 2005. Talanta
Paper

Use of flow injection multisite detection as a novel approach for blank signal correction in a spectrophotometric determination

António O. S. S. Rangel (with Oliveira, T.A.C.). 2005. Journal of AOAC International
Paper

A flow system for the spectrophotometric determination of lead in different types of waters using ion-exchange for pre-concentration and elimination of interferences

António O. S. S. Rangel (with Mesquita, R.B.R.). 2004. Talanta
Paper

A sequential injection system for the spectrophotometric determination of calcium, magnesium and alkalinity in water samples

António O. S. S. Rangel (with Mesquita, R.B.R.). 2004. Analytical Sciences
Paper

Automatic flow systems based on sequential injection analysis for routine determinations in wines

António O. S. S. Rangel (with Segundo, M.A.). 2004. Analytica Chimica Acta
Paper

Determination of Aluminum(III) in Crystallized Fruit Samples Using a Multicommutated Flow System

António O. S. S. Rangel (with Tóth, I.V.). 2004. Journal of Agricultural and Food Chemistry
Paper

Enzymatic determination of urea in milk by sequential injection with spectrophotometric and conductometric detection

António O. S. S. Rangel (with Lima, M.J.R.). 2004. Journal of Agricultural and Food Chemistry
Paper

Flow-through solid-phase based optical sensor for the multisyringe flow injection trace determination of orthophosphate in waters with chemiluminescence detection

António O. S. S. Rangel (with Morais, I.P.A.). 2004. Analytica Chimica Acta
Paper

Multi-syringe flow injection system with in-line microwave digestion for the determination of phosphorus

António O. S. S. Rangel (with Almeida, M.I.G.S.). 2004. Talanta
Paper

Sequential injection titration of chloride in milk with potentiometric detection

António O. S. S. Rangel (with Reis Lima, M.J.). 2004. Food Control
Paper

Spectrophotometric determination of nitrite and nitrate in cured meat by sequential injection analysis

António O. S. S. Rangel (with Oliveira, S.M.). 2004. Journal of Food Science
Paper

Biological treatment of a contaminated gaseous emission containing monochlorobenzene

António O. S. S. Rangel & Paula Castro (with Bastos, F.S.C.). 2003. Environmental Technology
Paper

Kinetic determination of L(-)malic acid in wines using sequential injection analysis

António O. S. S. Rangel (with Segundo, M.A.). 2003. Analytica Chimica Acta
Paper

Use of a mixing chamber for sample preparation and multiple collection in sequential injection analysis: Determination of sulfate in wines

António O. S. S. Rangel (with Silva, H.R.). 2003. Journal of the Brazilian Chemical Society
Paper

Use of a single air segment to minimise dispersion and improve mixing in sequential injection: Turbidimetric determination of sulphate in waters

António O. S. S. Rangel (with Morais, I.P.A.). 2003. Water Research
Paper

A flow system with in-line blank correction applied to the spectrophotometric determination of total iron and chromium (VI) in wastewaters

António O. S. S. Rangel (with Morais, I.P.A.). 2002. Analytical and Bioanalytical Chemistry
Paper

A sequential injection system for the in-line digestion and colorimetric determination of phosphorus in milk

António O. S. S. Rangel (with Reis Lima, M.J.). 2002. Journal of Food Science
Paper

Colorimetric determination of phosphorus in milk by flow injection analysis using a thermal/UV induced digestion

António O. S. S. Rangel (with Reis Lima, M.J.). 2002. Italian Journal of Food Science
Paper

Sequential injection flow system with improved sample throughput: Determination of glycerol and ethanol in wines

António O. S. S. Rangel (with Segundo, M.A.). 2002. Analytica Chimica Acta
Paper

Turbidimetric determination of chloride in different types of water using a single sequential injection analysis system

António O. S. S. Rangel (with Mesquita, R.B.R.). 2002. Journal of Environmental Monitoring
Paper

A gas diffusion sequential injection system for the determination of sulphur dioxide in wines

António O. S. S. Rangel (with Segundo, M.A.). 2001. Analytica Chimica Acta
Paper

Determination of Sulfate in Natural and Residual Waters by Turbidimetric Flow-Injection Analysis

António O. S. S. Rangel (with Morais, I.P.A.). 2001. Journal of AOAC International
Paper

Assay of plant tissues for elemental content by flow injection analysis

António O. S. S. Rangel (with Lima, J.L.F.C.). 2000. Communications in Soil Science and Plant Analysis
Paper

Enzymatic determination of ethanol and glycerol by flow injection parallel multi-site detection

António O. S. S. Rangel (with Rangel, A.O.S.S.). 2000. Analytica Chimica Acta
Paper

Multisyringe flow system: Determination of sulfur dioxide in wines

António O. S. S. Rangel (with Segundo, M.A.). 2000. Analyst
Paper

Sequential injection system for the spectrophotometric determination of reducing sugars in wines

António O. S. S. Rangel (with Araújo, A.N.). 2000. Talanta
Paper

Spectrophotometric determination of carbon dioxide and sulphur dioxide in wines by flow injection

António O. S. S. Rangel (with Atanassov, G.T.). 2000. Analusis
Paper

Spectrophotometric flow injection determination of total phosphorus in beer using on-line UV/thermal induced digestion

António O. S. S. Rangel (with Fernandes, S.M.V.). 2000. Fresenius' Journal of Analytical Chemistry
Paper

Determination of ethanol in wines by flow injection spectrophotometry using gas-diffusion and an immobilized enzyme reactor

António O. S. S. Rangel (with Rangel, A.O.S.S.). 1999. American Journal of Enology and Viticulture
Paper

Determination of iron in soils by flow injection atomic absorption spectrometry

António O. S. S. Rangel (with Ferreira, A.M.R.). 1998. Communications in Soil Science and Plant Analysis
Paper

Determination of total sulphur dioxide in beer by flow injection spectrophotometry using gas-diffusion and the merging zones technique

António O. S. S. Rangel (with Fernandes, S.M.V.). 1998. Journal of the Institute of Brewing
Paper

Enzymatic determination of L(+) lactic and L(-) malic acids in wines by flow-injection spectrophotometry

António O. S. S. Rangel (with Lima, J.L.F.C.). 1998. Analytica Chimica Acta
Paper

Flow injection systems for elemental soil analysis determinations

António O. S. S. Rangel (with Ferreira, A.M.R.). 1998. Communications in Soil Science and Plant Analysis
Paper

Merging Zones Standard Addition Technique for Determination of Copper in Beer by Flow Injection Atomic Absorption Spectrophotometry

António O. S. S. Rangel (with Fernandes, S.M.V.). 1998. Journal of AOAC International
Paper

Sequential determination of titratable acidity and tartaric acid in wines by flow injection spectrophotometry

António O. S. S. Rangel (with Rangel, A.O.S.S.). 1998. Analyst
Paper

Flow Injection Determination of Sodium, Potassium, Calcium, and Magnesium in Beer by Flame Emission and Atomic Absorption Spectrometry

António O. S. S. Rangel (with Fernandes, S.M.V.). 1997. Journal of Agricultural and Food Chemistry
Paper

Flow injection system with gas diffusion for the sequential determination of total nitrogen and phosphorus in vegetables

António O. S. S. Rangel (with Lima, J.L.F.C.). 1997. Fresenius' Journal of Analytical Chemistry
Paper

Turbidimetric flow-injection determination of total nitrogen and potassium in vegetables

António O. S. S. Rangel (with Lima, J.L.F.C.). 1997. Analytica Chimica Acta
Paper

Colorimetric determination of available iron in soils by flow injection analysis

António O. S. S. Rangel (with Ferreira, A.M.R.). 1996. Analusis
Paper

Determinação de anião nitrato em águas por FIA usando um detector potenciométrico tubular

António O. S. S. Rangel (with Lima, J.L.F.C.). 1996. Revista Portuguesa de Farmacia
Paper

Determination of chloride in soils by flow injection potentiometric pseudo-titration

António O. S. S. Rangel (with Ferreira, A.M.R.). 1996. Communications in Soil Science and Plant Analysis
Paper

Flow Injection Sequential Speciation of Free and Total Potassium in Fortified Wines

António O. S. S. Rangel (with Rangel, A.O.S.S.). 1996. Analytical Sciences
Paper

Potentiometric determination of chloride in vegetables by flow injection analysis

António O. S. S. Rangel (with Lima, J.L.F.C.). 1996. Communications in Soil Science and Plant Analysis
Paper

Potentiometric determination of total nitrogen in soils by flow injection analysis with a gas-diffusion unit

António O. S. S. Rangel (with Ferreira, A.M.R.). 1996. Australian Journal of Soil Research
Paper

Simultaneous determination of potassium and sodium in vegetables by flame emission spectrometry using a flow-injection system with two dialysis units

António O. S. S. Rangel (with Lima, J.L.F.C.). 1996. Analytical Sciences
Paper

Spectrophotometic flow injection determination of lead in Port wine using in-line ion-exchange concentration

António O. S. S. Rangel (with Lopes, T.I.M.S.). 1996. Analyst
Paper

COLORIMETRIC DETERMINATION OF IRON IN BEER BY FLOW INJECTION ANALYSIS USING THE MERGING ZONES TECHNIQUE

António O. S. S. Rangel (with FERNANDES, S.M.V.). 1995. Journal of the Institute of Brewing
Paper

Construction and use of a tubular picrate ion-selective electrode for reducing sugar determination in Port wine by flow-injection analysis

António O. S. S. Rangel (with Lopes, T.I.M.S.). 1995. Analytica Chimica Acta
Paper

Flow Injection Determination of Nitrate in Vegetables Using a Tubular Potentiometric Detector

António O. S. S. Rangel (with Lima, J.L.F.C.). 1995. Journal of Agricultural and Food Chemistry
Paper

Flow injection simultaneous determination of basic cation pairs in soils

António O. S. S. Rangel (with Ferreira, A.M.R.). 1995. Soil Science
Paper

Flow injection systems with a stream splitting and a dialysis unit for the soil analysis of sodium and potassium by flame emission spectrometry, and calcium and magnesium by atomic absorption spectrophotometry

António O. S. S. Rangel (with Ferreira, A.M.). 1995. Communications in Soil Science and Plant Analysis
Paper

Differential-pulse cathodic stripping voltammetric determination of sodium nitroprusside at a hanging mercury drop electrode aided by copper(II) and Poly-L-lysine modification

António O. S. S. Rangel (with Pirzad, R.). 1994. The Analyst
Paper

Flow injection titration of chloride in food products with a silver tubular electrode based on an homogeneous crystalline membrane

António O. S. S. Rangel (with Ferreira, I.M.P.L.V.O.). 1994. Food Chemistry
Paper

Usefulness of a detector inlet overpressure and stream splitting in FIA systems to deal with food sample pre-treatment requirements. Application to wine analysis

António O. S. S. Rangel (with Lima, JosL.F.C.). 1991. Food Control
Paper

Chloride pseudotitration in wines by FIA with a Ag<inf>2</inf>S/Ag tubular electrode as detector

António O. S. S. Rangel (with Lima, J.L.F.C.). 1989. Journal of Food Composition and Analysis
Paper

Simultaneous determination of total iron and chromium(VI) in wastewater using a flow injection system based on the sandwich technique

António O. S. S. Rangel (with Araujo, A.N.). 1989. The Analyst