Professor Dr. Yasser Zeedan EL-Nahhal Updated on 23/1/2021 Environmental Chemistry Of Pesticide Faculty of Science, The Islamic University –Gaza Palestine Jan 23, 2021 Citation index: 2593; h-index: 28; i 10-index: 60. https://scholar.google.com/citations?user=fWNZNl8AAAAJ&hl=en Birth date and place: 22/4/1958, Gaza Palestine Home address: Gaza city, Shatee area. 77/4, phone 00972599634708. Work address: The Islamic University-Gaza Palestine Email: y_el_nahhal@hotmail.com Yasser El-Nahhal received his Ph.D on 6.6.1999 from The Hebrew University of Jerusalem- Israel and did the 1st postdoc at Michigan State University-USA and the 2nd Postdoc at Christian-Albrechts-Universität, Kiel, Germany. Dr El-Nahhal joined the Environmental Protection and Research Institute in Gaza 2005-2010 as a senior scientist, then he Joined Faculty of Science, The Islamic University Gaza, on October 2010 as an assistant Professor. On Jan 1, 2015, he promoted to an associate professor. On July 21, 2020 he was promoted to full Professor. He published more than 90 articles in several Journals with high impact factor, seven book chapters and 26 abstracts in international conferences and registered one patent in USA. Prof Dr El-Nahhal supervised 20 M.Sc students. He maintains connections with international scientific community. He gave more than 5 TV- lectures to international community in different fields. Currently, he is a Professor at the department of environment and earth sciences at the Islamic university-Gaza. Palestine.