| 双柱双ECD检测器-气相色谱法测定水中的灭蚁灵 |
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| 作者姓名： | 杨素娜 |
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| 作者单位： | 上海市嘉定区环境监测站; |
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| 摘 要： | 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。
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| 关 键 词： | 双柱双检测器 气相色谱法 水质 灭蚁灵 |
Determination of Mirex in Water with Double Column Double ECD Detctor - Gas Chromatography |
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| Authors: | YangSuna |
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| Institution: | YangSuna( Environment Monitoring Station of JiaDing District ShangHai City Shanghai 201822) |
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| Abstract: | Mirex in water was extracted by liquid - liquid extraction, purified through sulfuric acid and ana- lyzed with Double Column Double ECD - Gas Chromatography. The detection limits of ECD1 （ capillary col- umn DB-35ms） and ECD2 （capillary column HP-5） were respectively 0. 051μg/L and 0. 0381xg/L at 100ml sample. The recoveries of six matrix samples were 81.7% and 78.3%, RSDs were 3.74% and 2.32% In this method, two group data were obtained through one injetction, which could rule out the possibility of false positive results, and thus qualitative analysis could be more accurate and precise. |
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| Keywords: | Double Column Double ECD Gas Chromatography Water quality Mirex |
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