气相色谱法测定敌敌畏·氯氰菊酯复配乳油

Determination of Dichlorvos-cypermethrin EC by Gas Chromatography

采用弱极性填充分析柱和程序升温的气相色谱方法对敌敌畏·氯氰菊酯复配乳油中两活性组分进行测定,氢火焰离子化检测器检测,双内标定量。通过对两有效成分的线性关系、精密度和回收率试验,获得了满意的结果。测定敌敌畏和氯氰菊酯的线性相关系数分别为1.0000和0.99995,标准偏差分别为0.37和0.019,相对标准偏差分别为1.96%和0.85%,平均回收率分别为99.23%和99.51%。

A gas chromatography method was established to determine dichlorvos and cypermethrin in the mixture formulation emusifiable concentrate （EC） . The gas chromatography method was acquired with weak polar column and programmed temperature, dichlorvos and cypermethrin content in the formulation were detected under the conditions such as FID detector and double interior standard quantitation. The results showed that the linear correlation coefficients for dichlorvos and cypermetbrin were 1.000 0 and 0.999 95, the RSD 1.96% and 0.85%, and average recovery were 99.23% and 99.51%, respectively. Indicating that the method was satisfactory for analysis of dichlorvos and cypermethrin content in the formulation.