Zygfryd Witkiewicz received his scientific degrees from the Chemical Faculty, Military University of Technology, where he has held, since 1989, the position of full professor. From 2000 to 2012, he also had a position as a professor at the Jan Kochanowski University in Kielce. At this university, from 2002 to 2012, he was the head of the Institute of Chemistry. His scientific interests concern environmental analysis including chemical warfare agents. Gas chromatography with different methods of sample preparation is the main analytical method used by him. He is a member of The Chromatographic Society and Chromatographic Committee of the Polish Academy of Science. He has been also a member of The Committee of Analytical Chemistry of the Polish Academy of Sciences. He is involved in work in the Polish Committee of Standardization. For about 15 years, he has been a deputy editor-in-chief of Chemia Analityczna Journal.