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样品以蒸馏水和丙酮为提取剂 ,石油醚萃取 ,混合柱净化 ,气相色谱 (ECD)检测。最小检出浓度为 0 .0 4mg/kg。空白样品添加 0 .0 5～ 1mg/kg乙草胺的平均回收率为 83.0 %～ 96 .1%
Samples were extracted with distilled water and acetone, extracted with petroleum ether, cleaned with a mixed column and detected by gas chromatography (ECD). The minimum detectable concentration is 0. 0 4mg / kg. The average recoveries of blank samples with 0 .0 5 ~ 1mg / kg acetochlor were 83.0% ~ 96.1%