化学
色谱法
杀虫剂
对氧磷
对硫磷
杀螟松
自来水
甲基对硫磷
检出限
高效液相色谱法
地表水
农药残留
环境化学
乙酰胆碱酯酶
环境工程
农学
生物
酶
生物化学
工程类
作者
R. Carabias Martínez,Encarnación Rodríguez‐Gonzalo,M. Moran,J. Hernández Méndez
标识
DOI:10.1016/0021-9673(92)87052-a
摘要
A sensitive method for the high-performance liquid chromatographic determination of five organophosphorus pesticides (paraoxon, methyl-parathion, ethyl-parathion, guthion and fenitrothion) in fruits and tap and river water samples is described. For the determination of pesticides in fruits a simple and rapid sample preparation procedure was developed that allowed pesticides to be determined at 50–100 μg/kg levels with recoveries ranging from 83 to 118% and relative standard deviations below 6%. The determination of pesticide residues in surface water samples was also successfully accomplished. Concentrations at sub-ppb levels can be measured by using a solid-phase concentration step, the recoveries being over 80%. In analyses of both fruits and surface waters, the sensitivity levels achieved were 2–10 times lower than legal limits admitted in the European Economic Community.
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