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Historically and Currently Used Dechloranes in the Sediments of the Great Lakes

机译：大湖沉积物中的历史和当前使用的十氯烷

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摘要

Dechlorane (mirex), Dechlorane Plus (DP), De-chlorane 602 (Dec602), Dechlorane 603 (Dec603), Dechlorane 604 (Dec604), and Chlordecone (Kepone) were analyzed in 16 sediment cores collected in 2007 from the Great Lakes of North America. Results show that Lake Ontario sediments have accumulated mirex, DP, Dec602 and Dec604 in amounts 1 to 2 orders of magnitude higher than other Great Lakes. The chemical inventory decreases log-linearly with increasing latitude (N) and longitude (W) of the sampling locations, but Lake Ontario sites are outliers in the regression against latitude. The regression analyses suggest differences among the anah/tes with regard to source impact and long-range transport behavior. Temporal trends of input differ among lakes. Most sites in Lake Superior are still receiving increasing fluxes of DP and Dec602, while these have been declining in Lake Ontario from the peak around 1990. The relative abundance of the two DP isomers, represented by , increases with increasing distance from the potential discharge source in Niagara Falls, NY, suggesting the anti-DP isomer is more vulnerable to degradation during long-range atmospheric transport. Kepone was not detected in the sediments of Lakes Ontario, Erie, and Michigan.
机译：对2007年从大湖地区收集的16个沉积物岩心中分析了十氯（灭蚁灵），十氯Plus（DP），十氯602（Dec602），十氯603（Dec603），十氯604（Dec604）和十氯酮（Kepone）。北美。结果表明，安大略湖的沉积物积累了灭蚁灵，DP，Dec602和Dec604，其数量比其他大湖高1至2个数量级。随着采样位置的纬度（N）和经度（W）的增加，化学物质清单呈对数线性减少，但是安大略湖站点在反纬度回归中是离群值。回归分析表明，anah / tes之间在源头影响和远程运输行为方面存在差异。湖泊的投入时间趋势不同。苏必利尔湖的大多数站点仍在接收不断增加的DP和Dec602通量，而安大略湖的通量则从1990年左右的峰值开始下降。用表示的两种DP异构体的相对丰度随着与潜在排放源距离的增加而增加。纽约州尼亚加拉瀑布市的研究表明，抗DP异构体在远距离大气运输过程中更容易降解。在安大略湖，伊利和密歇根湖的沉积物中未发现酮类。

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  • 来源
    《Environmental Science & Technology》 |2011年第12期|p.5156-5163|共8页
  • 作者

    Ruiqiang Yang; Hua Wei; Jiehong Guo; Colin McLeod; An Li; Neil C. Sturchio;

  • 作者单位

    School of Public Health, University of Illinois at Chicago, Chicago, Illinois 60612, United States,State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences, Beijing 100085, China;

    School of Public Health, University of Illinois at Chicago, Chicago, Illinois 60612, United States;

    School of Public Health, University of Illinois at Chicago, Chicago, Illinois 60612, United States;

    School of Public Health, University of Illinois at Chicago, Chicago, Illinois 60612, United States;

    School of Public Health, University of Illinois at Chicago, Chicago, Illinois 60612, United States;

    Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, Illinois, United States;

  • 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);
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