Combination of pesticides; acetamiprid, flutolanil and etofenprox are usually used for tomato fruits for protecting them against pest infection. Generally, pesticides, residues could be one of the health hazard sources. Two specific simple sensitive chromatographic methods are developed for simultaneous estimation of the concerning pesticides’ residues using simple economic steps of field sample preparation. The first method is HP- TLC method. Hexane: methanol: acetone: glacial acetic acid (8: 2: 0.5: 0.1, by volume) is proposed as a developing system. The second one is RP- HPLC. Acetonitrile: water (75: 25, v/v) is proposed as a mobile phase. The recommended methods are completely validated regarding ICH guidelines. Their means percentages and standard deviations of accuracy range 100.32± 0.89- 99.27± 0.9. The methods’ repeatability and intermediate precision relative standard deviation percentages range 0.395 & 0.894. They are successfully applied for estimating the pesticides in pure and commercial forms and field samples.
Dr. Hegazy holds a BSc in pharmacy from Cairo University, Egypt. She received her PhD in pharmaceutical analysis from Cairo University, Egypt/ University of Alberta, Canada.
Her research interests are in food chemistry, microbiological assessment, environmental and pharmaceutical analysis and detection in applied forms and nanoparticles and screening of anticancer factors.
She is the founder Department of Analytical Chemistry and the founder and director of the Alumni Sector in the newly developed Faculty of Pharmacy, Beni Suef University, Egypt. She is the president of the Council of Alumni of her faculty.