António Osmaro Santos Silva Rangel


António O. S. S. Rangel is Full Professor (Professor Catedrático) at Escola Superior de Biotecnologia (ESB-UCP), Porto, Portugal; he is presently President of the Scientific Board of ESB-UCP and member of the Direction Board of the Research Center, CBQF. He got his degree in Chemistry from University of Porto in 1985, and his PhD degree in Biotechnology (specialisation in Chemistry) from ESB-UCP in 1991.  He co-authored more than 165 papers in international journals and was involved in the supervision of 19 PhD theses; he is member of the Editorial Advisory Board of the journal “Talanta”. His research interests are mainly focused on the development of flow-based methods for the automation and miniaturization of (bio)chemical assays, with applications in the environmental, food, and biomedical sectors. His teaching activity involves general chemistry and analytical chemistry disciplines.




A. González, R. B. R. Mesquita, J. Avivar, T. Moniz, M. Rangel, V. Cerdà, A. O. S. S. Rangel, Microsequential injection lab-on-valve system for the spectrophotometric bi-parametric determination of iron and copper in natural waters, Talanta, 167, 703-708 (2017). doi: 10.1016/j.talanta.2017.02.055.

S. S. M. P. Vidigal, A. O. S. S. Rangel, A flow-based platform for measuring the acidity parameters in wine, Talanta, 168, 313-319 (2017). doi: 10.1016/j.talanta.2017.03.029.

A. C. Galvis-Sánchez, J. R. Santos, A. O. S. S. Rangel, A total analytical system featuring a novel solid–liquid extraction chamber for solid sample flow analysis, Anal. Bioanal. Chem., (2016). doi:10.1007/s00216-016-9858-4.

R. Suárez, R. B. R. Mesquita, M. Rangel, V. Cerdà, A. O. S. S. Rangel, Iron speciation by micro sequential injection solid phase spectrometry using 3-hydroxy-1(H)-2-methyl-4-pyridinone as chromogenic reagent, Talanta, 133, 15–20 (2015). doi:10.1016/j.talanta.2014.03.059.

I. C. Santos, R. B.R. Mesquita, A. Machado, A. A. Bordalo, A. O. S. S. Rangel, Sequential injection methodology for carbon speciation in bathing waters, Anal. Chim. Acta, 778, 38-47 (2013). doi:10.1016/j.aca.2013.03.043.

Scientific areas of activity

Analytical chemistry applied to environmental and food monitoring.

Research interests
Studies are focused on the development of flow methods based on the concepts of Sequential Injection Analysis, MicroSIA Lab-on-Valve, Multi-Commuted Flow Injection Analysis, and Multi-pumping Flow Analysis. These techniques provide in-line automation and miniaturization of (bio)chemical and reactions, separation processes (gas-diffusion, dialysis, solid phase extraction, chromatography) and pre-treatment processes (UV and microwave assisted mineralization/extraction). The development of novel sorbent materials for microextraction is also recently envisaged.

Publications | Projects

Academic CV
Link 1

Thesis as Advisor


Faculty of Biotechnology