...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Water Research >Environmental behavior of the chiral insecticide fipronil: Enantioselective toxicity, distribution and transformation in aquatic ecosystem
【24h】

Environmental behavior of the chiral insecticide fipronil: Enantioselective toxicity, distribution and transformation in aquatic ecosystem

机译：手性杀虫剂氟虫腈的环境行为：水生生态系统中的对映选择性毒性，分布和转化

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

The enantioselective environmental behaviors of the chiral insecticide fipronil and its metabolites in lab scale aquatic ecosystems were studied and the toxicity of fipronil enantiomers and the metabolites to non-target organisms Lemna minor (L. minor) and Anodonta woodiana (A. woodiana) was also investigated in this work. Water-sediment, water-L. minor, water-A. woodiana, and water-sediment-L. minor-A. woodiana ecosystems were set up and exposed to fipronil through a 90-day period. The results showed fipronil could be degraded significantly faster (half-life of 4.6 days) in the complex water-sediment-L. minor-A. woodiana ecosystem. A. woodiana played a crucial role in the dissipation of fipronil, and the microorganisms in the sediment also made great contribution to the degradation of fipronil in aquatic ecosystems. All the three metabolites fipronil desulfinyl, fipronil sulfide and fipronil sulfone were detected in the ecosystems and were more persistent than fipronil. Enantioselective degradation of fipronil was observed with S-fipronil being preferentially degraded in sediment and L minor, while R-fipronil was metabolized preferentially in A. woodiana. EC50 for L minor was obtained using 7-day exposure, and for A. woodiana was obtained using 72-h exposure. S-fipronil was more toxic to A. woodiana, while R-fipronil showed higher toxicity to L. minor. Moreover, the three metabolites were found more toxic than fipronil indicating significant environment risks due to their persistence. The present study might have important implications for the risk assessment of fipronil and its metabolites in real aquatic environment. (C) 2016 Elsevier Ltd. All rights reserved.
机译：研究了手性杀虫剂氟虫腈及其代谢产物在实验室规模水生生态系统中的对映选择性环境行为，还研究了氟虫腈对映体及其代谢产物对非目标生物Lemna minor（L. minor）和Anodonta woodiana（A. woodiana）的毒性。在这项工作中进行了调查。水沉淀物，水-L。轻微，水A。伍德安娜和水沉淀物L。小调建立了woodiana生态系统，并在90天的时间内暴露于氟虫腈。结果表明，在复杂的水沉淀物-L中，氟虫腈的降解速度明显更快（半衰期为4.6天）。小调伍德安娜生态系统。 wood木在氟虫腈的消散中起着至关重要的作用，沉积物中的微生物也对水生生态系统中氟虫腈的降解做出了巨大贡献。在生态系统中都检测到了氟虫腈去亚磺酰基，氟虫腈硫化物和氟虫腈砜这三种代谢物，它们比氟虫腈更持久。观察到氟虫腈的对映选择性降解，其中沉积物中的S-氟苯腈被优先降解，而次要的L被优先降解，而wood木中的R-氟苯腈则被优先代谢。 L小调的EC50是使用7天的暴露量获得的，而A. woodiana的EC50是通过72小时的暴露量获得的。 S-fipronil对wood.woodiana的毒性更大，而R-fipronil对L. minor的毒性更高。此外，发现这三种代谢物的毒性比氟虫腈毒性更大，这表明它们的持久性对环境构成重大风险。本研究可能对实际水生环境中氟虫腈及其代谢物的风险评估具有重要意义。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Water Research》 |2016年第15期|138-146|共9页
  • 作者

    Qu Han; Ma Rui-xue; Liu Dong-hui; Gao Jing; Wang Fang; Zhou Zhi-qiang; Wang Peng;

  • 作者单位

    China Agr Univ, Dept Appl Chem, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, West Yuanmingyuan Rd 2, Beijing 100193, Peoples R China;

    Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Beijing Key Lab Emerging Organ Contaminants Contr, Collaborat Innovat Ctr Reg Environm Qual,Sch Envi, Beijing 100084, Peoples R China;

    China Agr Univ, Dept Appl Chem, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, West Yuanmingyuan Rd 2, Beijing 100193, Peoples R China;

    China Agr Univ, Dept Appl Chem, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, West Yuanmingyuan Rd 2, Beijing 100193, Peoples R China;

    China Agr Univ, Dept Appl Chem, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, West Yuanmingyuan Rd 2, Beijing 100193, Peoples R China;

    China Agr Univ, Dept Appl Chem, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, West Yuanmingyuan Rd 2, Beijing 100193, Peoples R China;

    China Agr Univ, Dept Appl Chem, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, West Yuanmingyuan Rd 2, Beijing 100193, Peoples R China;

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

    Fipronil; Aquatic ecosystem; Enantioselectivity; Toxicity; Transformation; Metabolites;

    机译：非那洛尔;水生生态系统;对映选择性;毒性;转化;代谢产物;

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