全自动固相萃取与GC-MS法测定水中农药

摘要

A method for determining pesticides in water was established. The water was firstly filtered, and then extracted by automatic solid phrase extraction, finally, determined by GC-MS. The results showed that organochlorine (endosulfan), organophosphorus insecticide (triazophos, cyanthoate, sulfotep, chlorpyrifos, acephate), carbamate insecticide (carbofuran), pyrethroid insecticide (cypermethrin) and amide herbicides (acetochlor) in samples were determined from 8 cases. The method was simple, sensitive, accurate and low cost, it could be used for determination of pesticides in water meaningfully.%建立水中农药成分的气质联用（GC-MS）检验方法。水过滤后，先经全自动固相萃取仪前处理，再进行GC-MS分析。8起案例检材中检测出有机氯类杀虫剂（硫丹）3例、有机磷类杀虫剂（三唑磷、果虫磷、治螟磷、毒死蜱、乙酰甲胺磷）2例、氨基甲酸酯类杀虫剂（克百威）1例、拟除虫菊酯类杀虫剂（氯氰菊酯）1例、酰胺类除草剂（乙草胺）1例。该方法简单易行，灵敏度高，结果准确，人力成本低，对检测水中农药成分具有重大意义。