Jiri Barek received his PhD degree in 1976 from the Charles University in Prague, Czech Republic. He is now head of UNESCO Laboratory of environmental electrochemistry at the Department of Analytical Chemistry, Faculty of Science, Charles University in Prague. His main research interests are electrochemical determination of trace amounts of biologically active organic substances, e.g. chemical carcinogens, biomarkers, drugs and their metabolites, pesticides, dyes and dye-industry intermediates, etc, high-performance liquid chromatography and flow injection analysis of the above mentioned substances with electrochemical detection, and development of new electrochemical sensors and detectors. He is author and co-author of more than 400 publications refereed journals of 17 chapters in monographs devoted mainly to electroanalytical methods, 3 university teaching texts. H-index 35. Member of Editorial Board of Chemické Listy (scientific journal of Czech Chemical Society) and of Analytical and Bioanalytical Chemistry (Springer Verlag). President of the Division of Analytical Chemistry of the Czech Chemical Society. Member of the Steering Committee of the Division of Analytical Chemistry of the European Chemical Society, affiliate member of Steering committee of Division V (analytical chemistry) of IUPAC. Honorary member of Serbian Chemical Society.