一种1-2%毒死蜱药液中毒死蜱含量测定方法的建立
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摘要
介绍了一种气相色谱法测定1-2%毒死蜱药液中毒死蜱含量方法的建立,并从专属性、线性和范围、准确度、精密度、检出限和定量限以及实际样品检测等方面进行了方法学验证。经方法学验证,在毒死蜱及内标邻苯二甲酸二正戊酯出峰位置没有干扰,专属性好;毒死蜱浓度在0. 02～2. 00 mg/m L范围线性相关系数为0. 9995,线性好;回收率101%～102%,准确度高;相对标准偏差0. 58%,精密度高;方法的检出限为0. 00075%,定量限为0. 00255%。
The establishment of a method for determination of chlorpyrifos in 1-2% chlorpyrifos solution by gas chromatography was introduced,and the methodological verification was carried out from the specificity,linearity and range,accuracy,precision,detection limit and quantitation limit,actual sample test. According to the methodological verification,there was no interference in the peak position of chlorpyrifos and internal standard di-n-pentyl phthalate,and the specificity was good. The linear correlation coefficient of chlorpyrifos concentration in the range of 0. 02 ～2. 00 mg/m L was 0. 9995,and the linearity was good. The recovery rate was 101% ～ 102%,and the accuracy was high.The relative standard deviation was 0. 58%, and the precision was high. The detection limit of the method was0. 00075%,and the limit of quantification was 0. 00255%.
The establishment of a method for determination of chlorpyrifos in 1-2% chlorpyrifos solution by gas chromatography was introduced,and the methodological verification was carried out from the specificity,linearity and range,accuracy,precision,detection limit and quantitation limit,actual sample test. According to the methodological verification,there was no interference in the peak position of chlorpyrifos and internal standard di-n-pentyl phthalate,and the specificity was good. The linear correlation coefficient of chlorpyrifos concentration in the range of 0. 02 ～2. 00 mg/m L was 0. 9995,and the linearity was good. The recovery rate was 101% ～ 102%,and the accuracy was high.The relative standard deviation was 0. 58%, and the precision was high. The detection limit of the method was0. 00075%,and the limit of quantification was 0. 00255%.
引文
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