...
首页> 外文期刊>Chemosphere >Using the o,p'-DDT/p,p'-DDT ratio to identify DDT sources in China
【24h】

Using the o,p'-DDT/p,p'-DDT ratio to identify DDT sources in China

机译:使用o,p'-DDT / p,p'-DDT比值确定中国的DDT来源

获取原文
获取原文并翻译 | 示例
           

摘要

Dichlorodiphenyltrichloroethane (DDT) has been banned in China for decades, and yet high DDT concentrations are still being detected in the Chinese environment. This might be at least partly due to the current use of dicofol formulation, which contains DDT as an impurity. In this study, a method based on the ratios of two DDT isomers, o,p'-DDT and p,p'-DDT, was established and used to estimate the relative contributions of dicofol formulation and those of technical DDT to overall environmental DDT. Based on this method and field data from the literature, we calculated that dicofol formulation contributed >72% of atmospheric DDT in 2004 in the Taihu Lake region, China, and this value was >84% in summer when dicofol was applied for agricultural purposes. Sediment and soil, however, contained mostly residual DDT from the historical use of technical DDT. In most other regions of China, we found that dicofol contributed to a significant fraction of DDT in air samples.
机译:二氯二苯基三氯乙烷(DDT)在中国已被禁止使用数十年,但在中国环境中仍检测到高DDT浓度。这可能至少部分是由于目前使用的三氯杀螨醇制剂含有DDT作为杂质。在这项研究中,建立了一种基于两种DDT异构体o,p'-DDT和p,p'-DDT的比率的方法,该方法用于估算三氯杀螨醇配方和工业用DDT对整体环境DDT的相对贡献。 。根据这种方法和文献中的现场数据,我们计算出,三氯杀螨醇制剂在2004年中国太湖地区的大气DDT贡献量> 72%,而当三氯杀螨醇用于农业用途时,该值在夏季大于84%。但是,沉积物和土壤中大部分含有残留的滴滴涕,这些滴滴涕是过去使用技术滴滴涕所产生的。在中国大多数其他地区,我们发现三氯杀螨醇对空气样本中的滴滴涕有很大贡献。

著录项

  • 来源
    《Chemosphere》 |2010年第8期|p.1033-1038|共6页
  • 作者

    Xinghua Qiu; Tong Zhu;

  • 作者单位

    State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;

    State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dichlorodiphenyltrichloroethane (DDT); dicofol; technical DDT; isomer ratio; source; China;

    机译:二氯二苯基三氯乙烷(DDT);三氯杀螨醇技术滴滴涕;异构体比例资源;中国;

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