Method for quantitatively detecting organophosphorus pesticide chlorpyrifos in environmental air

• Main Authors: JI GUIXIANG, XU HUAIZHOU, WU SHENGMIN, LIU JINING, HAN ZHIHUA, ZHANG SHENGHU, SONG NINGHUI, SHI LILI, ZHANG QIN
• Format: Patent
• Language: Chinese; English
• Published: 19.12.2017
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a method for quantitatively detecting organophosphorus pesticide chlorpyrifos in environmental air, and belongs to the field of detection methods for pesticide residues. The method comprises collection of a sample (comprising a gas phase part and a particulate matter part), pretreatment of the sample and chromatography-tandem mass spectrometry quantitative detection. Compared with reported methods, the detection of the chlorpyrifos in the environmental air is higher in selectivity and higher in sensitivity through the optimization of parameters of a chromatography-mass spectrometry detection method. According to the method, by the use of a multi-reaction monitoring technology of high performance liquid chromatography/tandem mass spectrometry, the shortcoming that a conventional detector cannot have the selectivity and the sensitivity at the same time during detection of a trace chlorpyrifos compound in a complicated background matrix is overcome, and qualitation and quantitation are mor