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样品以二氯甲烷为提取剂，弗罗里硅土混合柱净化，用配有大口径石英毛细柱和电子捕获检测器（ＥＣＤ）的气相色谱仪测定。空白样品添加０００５～００２０ｍｇ／ｋｇ稻思达的平均回收率为８８％～９４％。最低检测浓度为０００１ｍｇ／ｋｇ。
The samples were eluted with dichloromethane and cleaned on a Florisil mixed column, using a gas chromatograph equipped with a large-bore quartz capillary column and an electron capture detector (ECD). The average recovery of 0005 ~ 0020mg / kg paddy in blank samples was 88% ~ 94%. The lowest detection concentration of 0 001mg / kg.