衍生化气相色谱法测定环境水样中的多菌灵

摘要

A derivatization method with Gas Chromatography-Nitrogen-phosphorus detector was evaluated for the determination of carbendazim in water samples by optimizing reaction temperature, time and other conditions of the derivative reaction. Determination limit for carbendazim was 0. 10μg/L,the recovery ratios of the method were 83.2% ~ 90.9%, and relative standard deviation was 4.6%. The method was applied to analysis of trace carbendazim in water samples, and satisfied the requirement of "the Effluent standards of Pollutants for heterocyclic Pesticide Industry" (GB 21523 -2008).%通过对反应温度、时间等衍生化条件的优化研究,建立了环境水样中残留多菌灵的衍生化气相色谱氮磷检测方法.方法的最低检出浓度为0.10 μg/L,样品加标回收率为83.2％ ～90.9％,相对标准偏差为4.6％.利用该方法能较好地满足GB 21523 -2008《杂环类农药工业水污染物排放标准》中该杂环类农药的痕量测定要求.