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首页> 外文期刊>Environmental Pollution >Occurrences and fate of DDT principal isomers/metabolites, DDA, and o,p'-DDD enantiomers in fish, sediment and water at a DDT-impacted superfund site
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Occurrences and fate of DDT principal isomers/metabolites, DDA, and o,p'-DDD enantiomers in fish, sediment and water at a DDT-impacted superfund site

机译：在受DDT影响的超级基金地点，鱼类，沉积物和水中的DDT主要异构体/代谢物，DDA和o，p'-DDD对映异构体的发生和命运

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摘要

In the 1950s and 60s, discharges from a DDT manufacturing plant contaminated a tributary system of the Tennessee River near Huntsville, Alabama, USA. Regulatory action resulted in declaring the area a Superfund site which required remediation and extensive monitoring. Monitoring data collected from 1988, after remediation, through 2011 showed annual decreases approximating first-order decay in concentrations of total DDT and its six principal congeners (p,p'-DDT, o,p'-DDT, p,p'-DDD, o,p'-DDD, p,p'-DDE and o,p'-DDE) in filets from three species of fish. As of 2013, these concentrations met the regulatory requirements of 5 mg/kg or less total DDT for each fish tested. The enantiomer fractions (EF) of chiral o,p'-DDD in smallmouth buffalo and channel catfish were always below 0.5, indicating preferential decay of the (+)-enantiomer of this congener; this EF did not change significantly over 15 years. The often-neglected DDT metabolite p,p'-DDA was found at a concentration of about 20 μg/1 in the ecosystem water.
机译：在1950年代和60年代，DDT制造厂的排放物污染了美国阿拉巴马州Huntsville附近的田纳西河支流系统。监管行动导致该地区被宣布为超级基金所在地，需要整治和广泛监控。补救后从1988年到2011年收集的监测数据显示，滴滴涕和其六个主要同类物（p，p'-DDT，o，p'-DDT，p，p'-DDD）的浓度逐年下降，近似于一阶衰减，三种鱼的鱼片中的o，p'-DDD，p，p'-DDE和o，p'-DDE）。截至2013年，这些浓度满足每条被测鱼的总DDT不得超过5 mg / kg的法规要求。小口水牛和channel鱼中手性o，p'-DDD的对映体分数（EF）始终低于0.5，表明该同类物的（+）-对映体优先衰变；该EF在过去的15年中没有显着变化。人们发现，在生态系统水中，DDT代谢产物p，p'-DDA经常被忽略，浓度约为20μg/ 1。

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  • 来源
    《Environmental Pollution》 |2014年第11期|224-234|共11页
  • 作者

    A.W. Garrison; M. Cyterski; K.D. Roberts; D. Burdette; J. Williamson; J.K. Avants;

  • 作者单位

    U.S. Environmental Protection Agency, National Exposure Research Laboratory, Ecosystems Research Division, 960 College Station Road, Athens, GA, 30605, USA;

    U.S. Environmental Protection Agency, National Exposure Research Laboratory, Ecosystems Research Division, 960 College Station Road, Athens, GA, 30605, USA;

    Olin Corporation, Environmental Remediation Group, Cleveland, TN, 37323, USA;

    U.S. Environmental Protection Agency, Region 4, Science and Ecosystems Support Division, 980 College Station Road, Athens, GA, 30605, USA;

    U.S. Environmental Protection Agency, Region 4, Science and Ecosystems Support Division, 980 College Station Road, Athens, GA, 30605, USA;

    Senior Service America, U.S. Environmental Protection Agency, 960 College Station Road, Athens, GA, 30605, USA;

  • 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

    DDT; DDD; DDT/fish/sediment/water; o,p'-DDD EF; DDA;

    机译：滴滴涕;DDD;滴滴涕/鱼/沉积物/水;o;p'-DDD EF;DDA;

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