...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Hazardous Materials >Enantiomer-specific toxicity and bioaccumulation of alpha-cypermethrin to earthworm Eisenia fetida
【24h】

Enantiomer-specific toxicity and bioaccumulation of alpha-cypermethrin to earthworm Eisenia fetida

机译：对氯氰菊酯对worm艾美体的对映体特异性毒性和生物富集

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

Alpha-cypermethrin, a synthetic pyrethroid, is highly effective against a wide range of chewing and sucking insects in crops, and it is a racemic mixture of two enantiomers ((+)-1R-cis-αS+(-)-1S-cis-αR). Studies about the toxicity of alpha-cypermethrin to non-target organisms are mainly focused on aquatic organisms, whereas information regarding terrestrial organisms is relatively much less. Very little report about its enantioselective toxicity is known, so the present study tested the enantiomer-specific acute toxicity to earthworm Eisenia fetida. Experiment about bioaccumulation of two enantiomers in soil was conducted, peak-shaped accumulation curves were observed for both enantiomers, and the calculated biota to soil accumulations factor (BSAF) have significant difference between the two enantiomers. It was obvious that earthworm can uptake alpha-cypermethrin enantioselectively, preferentially accumulating (-)-(1S-cis-αR)-enantiomer. Great difference in toxicity to earthworm between two enantiomers was found, and the calculated LC_(50) values for (+)-(1R-cis-αS)-, (-)-(1S-cis-αR)-, and rac-alpha-cypermethrin were 49.53, 1663.87 and 165.61 ng/cm2, respectively. The acute toxicity of alpha-cypermethrin enantiomers was enantioselective.
机译：氯氰菊酯是一种合成的拟除虫菊酯，对多种农作物中的咀嚼和吮吸昆虫均具有很高的功效，并且是两种对映异构体（（+）-1R-cis-αS+（-）-1S-cis- αR）。关于α-氯氰菊酯对非目标生物毒性的研究主要集中在水生生物上，而关于陆生生物的信息则相对较少。关于其对映体选择性毒性的报道鲜为人知，因此本研究测试了对f Eisenia fetida的对映体特异性急性毒性。进行了两种对映体在土壤中的生物富集实验，观察了两种对映体的峰形积累曲线，计算出的两种生物对土壤累积因子（BSAF）之间存在显着差异。显然that可以对映体选择性吸收α-氯氰菊酯，优先积累（-）-（1S-顺式-αR）-对映体。发现两种对映异构体对earth的毒性差异很大，并且（+）-（1R-顺式-αS）-，（-）-（1S-顺式-αR）-和rac-的计算LC_（50）值α-氯氰菊酯分别为49.53、1663.87和165.61 ng / cm2。 α-氯氰菊酯对映异构体的急性毒性是对映选择性的。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2011年第3期|p.1072-1078|共7页
  • 作者

    Jinling Diao; Peng Xu; Donghui Liu; Yule Lu; Zhiqiang Zhou;

  • 作者单位

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China;

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China;

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China;

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China;

    Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China;

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

    alpha-cypermethrin; enantioselectivity; toxicity; bioaccumulation; earthworm;

    机译：α-氯氰菊酯;对映选择性毒性;生物蓄积蚯蚓;

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