...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Trace determination of dichlorodiphenyltrichloroethane and its main metabolites in environmental water samples with dispersive liquid-liquid microextraction in combination with high performance liquid chromatography and ultraviolet detector
【24h】

Trace determination of dichlorodiphenyltrichloroethane and its main metabolites in environmental water samples with dispersive liquid-liquid microextraction in combination with high performance liquid chromatography and ultraviolet detector

机译：分散液-液微萃取-高效液相色谱-紫外检测器联用法测定环境水样中的二氯二苯基三氯乙烷及其主要代谢物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dichlorodiphenyltrichloroethane,1,1,1-trichloro-2,2-bis(p-chlorophenyl)e thane (DDT) and its main metabolites have been paid much more attention, and present paper describes a new process for the rapid determination of such pollutants in environmental water samples based on dispersive liquid-liquid microextraction (DLLME) and high performance liquid chromatography with ultraviolet detector, which has merits such as high enrichment factor and sensitivity, low cost and easy to operate. Significant parameters such as extraction solvent and dispersive solvent type and volume, pH, extraction time and centrifuging time, which would have important impact on the enrichment of target pollutants, have been investigated in detail. The results exhibited that excellent performance could be achieved with carbon tetrachloride and acetonitrile as the extraction solvent and dispersive solvent, respectively. Under the optimal conditions, excellent linear relationship was gained in the range of 1.0-50 mu g L-1, and detection limits were in the range of 0.32-0.51 mu g L-1. The precisions of the proposed method were in the range of 2.80-7.50% (RSD). The proposed method was validated with real water samples, and the results indicated the spiked recoveries were in the range of 85.58-119.6% and the established method was very good and competitive in the determination of DDT and its metabolites.
机译：二氯二苯基三氯乙烷，1,1,1-三氯-2,2-双（对氯苯基）e（DDT）及其主要代谢物已受到更多关注，本文描述了一种快速测定此类污染物的新方法基于分散液-液微萃取（DLLME）和带紫外检测器的高效液相色谱法的环境水样品，具有富集因子高，灵敏度高，成本低，易于操作的优点。详细研究了重要参数，例如萃取溶剂和分散溶剂的类型和体积，pH，萃取时间和离心时间，这些参数会对目标污染物的富集产生重要影响。结果表明，四氯化碳和乙腈分别作为萃取溶剂和分散溶剂可实现优异的性能。在最佳条件下，线性关系良好，在1.0-50μgL-1范围内，检出限在0.32-0.51μgL-1范围内。该方法的精度在2.80-7.50％（RSD）范围内。实际水样验证了该方法的有效性，结果表明加标回收率在85.58-119.6％之间，建立的方法在滴滴涕及其代谢产物的测定中具有很好的竞争力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号