气相色谱-质谱法测定农药中14种有机氯·有机磷成分

目的]建立一种同时测定农药产品中14种有机氯、有机磷成分的气相色谱-质谱法。方法]农药样品用丙酮溶解，经有机滤膜过滤后，采用气相色谱-质谱法测定农药中14种有机氯、有机磷成分。结果]该方法平均加标回收率在75．24％～101．27％，相对标准偏差在0．55％～8．08％。该方法检出限除甲胺磷为0．5mg／L外，其他13种有机氯、有机磷成分均为0．1mg／L。结论]该测定方法的建立为制定农药中有机氯、有机磷农药成分检测标准提供了参考。

Determination of 14 Organochlorine and Organophosphorus Ingredients in Pesticides by GC-MS

Objective] The aim was to establish a determination method of 14 organochlorine and organophosphorus ingredients in pesticides by GC-MS. Method ] The samples were dissolved by acetone, ：and then filtered with organic membrane filter. Fourteen organochlorine and organophosphorus ingredients in pesticides were determined by gas chromatographic and mass spectrometry method. Result] The filtrates were analyzed by gas chromatography with mass spectrometry detection. Average recoveries of the target compounds ranged from 75.24% to 101.27% , with the relative standard deviations between 0.55% and 8.08%. The detection limits were 0.1 mg/L except that the detection limit of methamidophos was 0.5 mg/L. Conclusion] The determining method provides reference for the formulation of＇detection standard of organochlorine and organophosphorus ingredients in pesticides.