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    电子捕获检测器-气相色谱法测定土壤中丁虫腈农药残留量

    Determination of Residual Amount of Flufiprole in Soil by GC with ECD

    • 摘要: 提出了气相色谱法-电子捕获检测器测定土壤中丁虫腈农药残留量的方法。土壤样品在50 ℃下经正己烷-丙酮(1+1)混合液提取,用VF-1MS弹性石英毛细管柱分离,电子捕获检测器检测。丁虫腈的质量浓度在0.005~0.50 mg·L-1范围内与其峰面积呈线性关系。加标回收率在75.2%~100%之间,测定值的相对标准偏差(n=5)均小于7%。

       

      Abstract: A method of GC with ECD for the determination of residual amount of flufiprole in soil was proposed. The sample was extracted with a mixture of n-hexane and acetone (1+1) at the temperature of 50 ℃. The analyte was separated on VF-1MS elastic quartz capillary column and detected by ECD. Linear relationship between values of peak area and mass concentration of flufiprole was kept in the range of 0.005-0.50 mg·L-1. Values of recovery found by standard addition method were in the range of 75.2%-100%, and values of RSD′s (n=5) less than 7%.

       

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