| 液-液萃取-气相色谱法测定水中9种有机氯农药 |
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| 引用本文： | 王娜,王海娇,汪寅夫,李丽君.液-液萃取-气相色谱法测定水中9种有机氯农药[J].岩矿测试,2010,29(5):497-502. |
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| 作者姓名： | 王娜 王海娇 汪寅夫 李丽君 |
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| 作者单位： | 沈阳地质矿产研究所,辽宁,沈阳,110032 |
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| 基金项目： | 国土资源地质大调查--地下水污染测试技术研究项目资助 |
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| 摘 要： | 采用正己烷液-液萃取法提取,气相色谱法-电子捕获检测器测定水中9种有机氯农药。优化了实验条件:添加两种替代物作为分析过程的质量监控;使用浓硫酸磺化法净化去除杂质;采用Rtx-5MS和Rtx-1701柱双柱定性,保证数据准确可靠。9种有机氯农药的方法检出限为0.0017～0.0079μg/L,回收率为74.7%～105.1%,相对标准偏差(RSD,n=7)为4.2%～9.3%,9种农药在0.5～100μg/L内与峰面积呈良好的线性关系。方法检出限低,准确度和精密度高,简便,适用于批量样品的分析。
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| 关 键 词： | 液-液萃取 气相色谱法 双柱定性 净化 有机氯农药 水 |
| 收稿时间： | 2010/1/18 0:00:00 |
| 修稿时间： | 2010/6/20 0:00:00 |
Determination of 9 Organochlorine Pesticides in Water Samples by Liquid-liquid Extraction-Gas Chromatography |
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| WANG N,WANG Hai-jiao,WANG Yin-fu and LI Li-jun.Determination of 9 Organochlorine Pesticides in Water Samples by Liquid-liquid Extraction-Gas Chromatography[J].Rock and Mineral Analysis,2010,29(5):497-502. |
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| Authors: | WANG N WANG Hai-jiao WANG Yin-fu and LI Li-jun |
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| Institution: | Shenyang Institute of Geology and Mineral Resources, Shenyang 110032, China;Shenyang Institute of Geology and Mineral Resources, Shenyang 110032, China;Shenyang Institute of Geology and Mineral Resources, Shenyang 110032, China;Shenyang Institute of Geology and Mineral Resources, Shenyang 110032, China |
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| Abstract: | Nine organochlorine pesticides were determined by gas chromatography with electron capture detector (ECD) after samples pre-treatment by liquid-liquid extraction with n-hexane and purified with concentrated sulfuric acid.The double capillary columns of Rtx-5MS and Rtx-1701 were used for identifying the target compounds.The experimental conditions were optimized and two surrogates were chosen for quality control.The detection limits of the method for 9 organochlorine pesticides were in the range of 0.0017 ～ 0.0079 μg/L with linear ranges of 0.5 ～ 100 μg/L.The recoveries were 74.7% ～ 105.1% with the precision of 4.2% ～ 9.3% RSD (n=7).The method provides the advantages of low detection limits,good accuracy and precision,simple operation and is suitable for routine analysis of organochlorine pesticides in water samples. |
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| Keywords: | liquid-liquid extraction gas chromatography double capillary column identification purification organochlorine pesticide water |
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