论文部分内容阅读
采用液液萃法取提取水中的灭蚁灵,经浓硫酸净化,用双柱双ECD检测器-气相色谱法进行测定。当取样体积为100ml时,ECD1(色谱柱DB-35ms)和ECD2(色谱柱HP-5)的检出限分别为0.051μg/L和0.038μg/L,六组水样加标回收率为81.6%和78.4%,相对标准偏差3.74%和2.32%。该方法一次进样可得到两组数据来进行灭蚁灵的定性和定量分析,排除了假阳性产生的可能性,因此定性更准确、定量更精确。
Liquid-liquid extraction was used to extract the mirex from the water and purified by concentrated sulfuric acid. The results were determined by double-column dual-ECD detector-gas chromatography. The detection limits of ECD1 (column DB-35ms) and ECD2 (column HP-5) were 0.051μg / L and 0.038μg / L when the sample volume was 100ml, and the recoveries of the six water samples were 81.6 % And 78.4% respectively, with relative standard deviations of 3.74% and 2.32%. The method can be obtained by a sample of two sets of data for mirex qualitative and quantitative analysis, eliminating the possibility of false positives, so the qualitative more accurate quantitative more accurate.