Method for simultaneously detecting 32 recessive added pesticide components in pesticide

Abstract

The invention discloses a method for simultaneously detecting 32 recessive added pesticide components in a pesticide. The method comprises the following steps: (A) sample pretreatment: uniformly blending a pesticide sample, accurately weighing the sample and putting into a centrifuge tube, adding acetone, carrying out vortex vibration and centrifugation, accurately sucking the supernate into the centrifuge tube, adding normal hexane, and carrying out vortex vibration and centrifugation for later use; (B) mechanical testing solution treatment: introducing volume fixed solution into the centrifuge tube, adding an internal standard solution, fixing the volume by virtue of normal hexane, and uniformly mixing for detection; and (C) mass spectrum determination: carrying out qualitative and quantitative analysis on a to-be-detected solution in the step (B) by virtue of a gas chromatograph-mass spectrometer. According to the method, the problem of a detection blank in the detection of the recessive added pesticide components in the agricultural input pesticide is solved, the 32 recessive added pesticide components in the pesticide are simultaneously analyzed once by virtue of the principle that a mass spectrometry detector has high sensitivity and selectivity, and rapid, quantitative and qualitative detection of the 32 recessive added pesticide components in the pesticide is realized; and the method is suitable for the detection and analysis of large-batch samples.

Description

technical field [0001] The invention relates to a method for simultaneously detecting 32 kinds of recessively added pesticide components in pesticides, and belongs to the technical field of agricultural inputs-detection of other recessively added components in pesticides. Background technique [0002] Pesticides are indispensable agricultural inputs in agricultural production and the main means of pest control. The standardized application of pesticides and the quality of pesticides directly affect the effect of pest control and the quality and safety of agricultural products. With the advancement of society, people's awareness of food safety is constantly deepening. Pesticides that have been used in large quantities in the past with good effects in controlling diseases and insect pests and low cost are banned from production due to factors such as high toxicity, long half-life, and long residence time in organisms. Use, instead of environmentally friendly pesticides with hi...

AI Technical Summary

Problems solved by technology

In order to improve the insecticidal effect of pesticides, some illegal pesticide manufacturers will add trace amounts of highly toxic and banned pesticides to the pesticides to improve the efficacy. Many pesticides that have been banned for a long time will go to the fields in another way, which is harmful to people's lives, property and environmental hazard

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