| analysis of eight organophosphorus pesticide residues in fresh vegetables retailed in agricultural product markets of nanjing, china. | a method to effectively remove pigments in fresh vegetables using activated carbon followed cleanup through solid phase extraction (spe) cartridge to further reduce matrix interference and contamination, was established to determine eight organophosphorous pesticides (opps) by gas chromatography (gc) with nitrogen-phosphorus detection (npd) in this study, and it has been successfully applied for the determination of eight opps in various fresh vegetables with the recoveries ranging from 61.8% to ... | 2008 | 18651087 |