| 固相萃取-双柱气相色谱法测定水中多种有机磷农药残留 |
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| 引用本文： | 陈烨,许秀艳,吕怡兵,滕恩江,邢冠华,王超.固相萃取-双柱气相色谱法测定水中多种有机磷农药残留[J].中国测试技术,2011(5). |
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| 作者姓名： | 陈烨 许秀艳 吕怡兵 滕恩江 邢冠华 王超 |
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| 作者单位： | 中国环境监测总站; |
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| 基金项目： | 国家水体污染控制与治理科技重大专项子课题(2009ZX07527-001) |
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| 摘 要： | 针对单一气相色谱柱定性分析易出现假阳性误判的情况,采用固相萃取-气相色谱双柱技术测定环境水体中多种有机磷农药的残留量。水样中的有机磷农药通过HLB固相萃取小柱富集,经洗脱浓缩后,用DB-35MS和HP-5毛细管气相色谱柱、火焰光度检测器测定。方法的平均加标回收率为86.1%～118%,相对标准偏差为3.2%～6.8%,最低检出限为20～40ng/L,可满足环境水体中痕量有机磷农药残留的分析需要。
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| 关 键 词： | 有机磷农药 固相萃取 气相色谱 双柱 水 |
Determination of multiple organophosphorous pesticide residues in water by dual-column gas chromatography coupled with solid phase extraction |
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| Affiliation: | CHEN Ye,XU Xiu-yan,Lü Yi-bing,TENG En-jiang,XING Guan-hua,WANG Chao(China National Environmental Monitoring Centre,Beijing 100012,China) |
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| Abstract: | To avoid the case of false positive when analyzing by single column,the dual-column gas chromatography coupled with solid phase extraction was applied to the multi-residue determination of organophosphorous pesticides in environmental water.The organophosphorous pesticides were extracted from water with HLB solid phase extraction cartridges and then eluted.After concentrated,the eluents were detected by GC-FPD with DB-35MS and HP-5 capillary columns.The average recoveries of 5 replicates for analytes ranged... |
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| Keywords: | organophosphorous pesticides solid-phase extraction gas chromatography dual-column water |
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