Mohamed El-Saeid, Ph.D., Prof. of Chemistry and Environmental Pollution, Food & Agric. College, King Saud Univ. KSA, and Consultant of SCORE and PRC in the Ministry of Higher Education, KSA. Prof. EL-Seaid was a visiting Professor in the Department of Chemistry, Texas Southern University, Houston, from 2001 to 2005, and Oklahoma State Univ. OSU, OK, 2001. He was also an Assistant Prof. of Environmental Chemistry, Faculty of Agriculture, Al-Azhar University, Egypt. He obtained his Ph.D. under a collaboration program from Texas Southern University, USA with Al-Azhar University in 1999. He has more than 65 publications in different areas of chemistry and environmental pollution, pesticide residue analysis, POPs, PAHs in foods, water, air, soil, etc., by advanced and new techniques of chromatographic breakdown such as GCs, GCMS, GCMSMS, HRGCMSMS, LCMS, LCMSMS, SFC, CEC, CE, SFE, MAE, sonication, and SPE. He was a researcher of a project funded by RCMI, TSU. TX and a PI of six research projects funded by ARC, KSU, and KSA, and wrote a book chapter with Dr. Khan, "Analysis of pesticides in food samples by Supercritical Fluid Chromatography". Handbook of Pesticides: 2010, Chapter 5, pp 93-113, Taylor &Frances Group. CRC press. USA. Currently, Prof. El-Saeid is a PI for 2 research projects funded by KSNPST with a budget of SAR 3,500.000 and CO-PI for another 4 research projects. In 2014, he translated the Handbook of Pesticides 2010, into the Arabic language in 2 volumes (950 pages).