岩矿测试2012，Vol.31Issue(4)：653-659,7.
液液萃取-固相萃取富集地下水中毒杀芬的对比研究
Comparison between Liquid-Liquid Extraction and Solid Phase Extraction for Toxaphene in Underground Water Samples
摘要
Abstract
Toxaphene is a broad-spectrum organochlorine insecticide, which was one of the most widely used pesticides worldwide. It was listed as an organic contaminant in the Stockholm Convention on Persistent Organic Pollutants (2001) and the Groundwater Pollution Survey Specification of the China Geological Survey (2006), respectively, because of persistence and adverse effects on humans and the ecosystem. In this study, three methods of extraction of toxaphene from ground water samples were compared using liquid-liquid extraction, a solid phase extraction cartridge and solid phase extraction disc. The analytical conditions were optimized detailed for GDX-502 solid phase extraction ( SPE ) cartridge lab-filled because of its excellent character. The research results show that GDX-502 SPE cartridge packed in the lab has the highest recoveries (92. 3% -98. 5% ) in three SPE cartridges such as GDX-502, commercial LC-C18 and ENVITM-C18, and is also better than a solid phase extraction disc (92.8% -96.8%) & liquid-liquid extraction (80.3% -88.5%). The extraction time of the SPE disc only needs 20 -30 min for single extraction, and less than 40-50 min of GDX-502 SPE cartridge, 200 min of LC-C18 and ENVITM-C18. The GDX-502 SPE processes 12 samples as a batch which is more than 6 for the SPE disc. The SPE disc has the highest analytical cost and the GDX-502 SPE is cheaper than the SPE disc. The SPE is considered environmentally friendly because its solvent amounts are less than those for liquid-liquid exlraction. Finally, the GDX-502 solid-phase extraction cartridge has more advantages in terms of extraction efficiency, throughput, cost and environmental protection.关键词
地下水/毒杀芬/液液萃取/固相萃取柱/固相萃取盘/气相色谱-负化学电离质谱法Key words
under groundwater/ toxaphene/ liquid-liquid extraction/ soli phase extraction cartridge/ solid phase extraction disc/ Gas Chromatography-Negative Ion Chemical Ionization-Mass Spectrometry分类
天文与地球科学引用本文复制引用
饶竹,谢原利,陈巍..液液萃取-固相萃取富集地下水中毒杀芬的对比研究[J].岩矿测试,2012,31(4):653-659,7.基金项目
中国地质大调查项目(1212011120283,1212010816028) （1212011120283,1212010816028）
国土资源部公益性行业科研专项(200911043-28) （200911043-28）
