Maria Balcerzak is a full Professor of analytical chemistry in the Faculty of Chemistry of the Warsaw University of Technology, Warsaw, Poland. Her research activity has been focused on analytical chemistry of the noble metals, speciation analysis of metals and metalloids in biological as well as environmental materials, and the examination of food products for trace amounts of inorganic and organic components. Specific topics of her research include the development of methods for the examination of complex (food, biological, pharmaceutical, and environmental) materials with the use of various instrumental techniques, mainly UV-Vis spectrophotometry, MS and ICP-MS, and ion chromatography. She is a co-author of books and author of book chapters published by Polish Scientific Publisher, Binom Publisher (Moscow), Malamut Publisher (Poland), Elsevier, Springer, and Wiley & Sons, and she has published about 80 scientific papers.