Study on the Detection Technology of 7 Organophosphorus Pesticide Residues in Pakchoi

Abstract: The detection techniques of 7 organophosphorus pesticide residues in green vegetables were studied. Acetone and petroleum ether were used as extraction solvents, extracted by ultrasonic method, and measured by gas chromatography flame photometric detector (GC-FPD). The results show that the addition recovery rate and coefficient of variation of this method meet the requirements of pesticide residue analysis

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