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首页> 外文期刊>Environmental Science & Technology >Concentration and Bioaccumulation of Dechlorane Compounds in Coastal Environment of Northern China
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Concentration and Bioaccumulation of Dechlorane Compounds in Coastal Environment of Northern China

机译：中国北方沿海地区二氯化合物的富集和生物富集

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摘要

Dechioranes, including Dechlorane Plus (DP), Mirex (Dechlorane), Dechlorane 602 (Dec 602), Dechlorane 603 (Dec 603), and Dechlorane 604 (Dec 604), were determined using GC-MSD for water, sediment and oyster samples collected at 15 sampling sites near the Bohai and Huanghai Sea shore area of northern China in 2008. DP and Mirex were detected in most water, sediment, and oyster samples, which indicated widespread distribution of these two compounds. The mean concentrations in water, sediment and oyster samples, respectively, were 1.8 ng/L, 2.9 ng/g dry weight (dw) and 4.1 ng/g wet weight (ww) for total DP, and 0.29 ng/L, 0.90 ng/g dw, and 2.0 ng/g ww for Mirex. Dec 602 and Dec 603 were not detected in water but in small portions of the sediment and oyster samples, showing a low level of contamination by these two chemicals in the region. Strong and significant correlations were found between total DP and Mirex concentrations in water, sediment and oyster samples, probably suggesting similar local sources of these two chemicals. Dec 604 was not found in any samples. The biota-sediment accumulation factor (BSAF) of DP, Mirex, and Dec 602 declined along with the increase of their logarithm of octanol-water partition coefficients (log Kow), possibly indicating that compounds with lower log Kow (like Mirex and Dec 602) accumulated more readily in biota. The mean fractional abundance of syn-DP (fsyn) was 0.34 in water samples, a value lower than that in Chinese commercial mixture (0.41), while the mean /syn for surface sediment (0.44) and oyster (0.45) samples were higher than technical values. Enrichment of syn-DP in oyster was in agreement with previously reported findings in Great Lakes fish. Enrichment of syn-DP in marine surface sediments, however, is contrary to data reported for fresh water sediments. To our knowledge this is the first report of Dec 602, Dec 603, and Dec 604 in a marine environment and also the first report of Dechioranes in marine biota.
机译：使用GC-MSD对收集的水，沉积物和牡蛎样品进行了测定，包括Dechlorane Plus（DP），Mirex（Dechlorane），Dechlorane 602（Dec 602），Dechlorane 603（Dec 603）和Dechlorane 604（Dec 604）的十氯酮2008年在中国北方的渤海和黄海沿岸地区附近的15个采样点进行了采样。在大多数水，沉积物和牡蛎样本中都检测到DP和灭蚁灵，这表明这两种化合物的广泛分布。对于总DP，水，沉积物和牡蛎样品中的平均浓度分别为1.8 ng / L，2.9 ng / g干重（dw）和4.1 ng / g湿重（ww），以及0.29 ng / L，0.90 ng / g dw和Mirex的2.0 ng / g ww。在水中未检出Dec 602和Dec 603，但在沉积物和牡蛎样品的一小部分中未检出，表明该地区这两种化学物质的污染水平较低。在水，沉积物和牡蛎样品中总DP和灭蚁灵浓度之间发现强而显着的相关性，这可能表明这两种化学物质的本地来源相似。在任何样品中未找到604年12月。 DP，灭蚁灵和Dec 602的生物沉积物积累因子（BSAF）随辛醇-水分配系数对数的增加（log Kow）下降，可能表明log Kow较低的化合物（如Mirex和Dec 602） ）更容易在生物群中积累。水样本中syn-DP（fsyn）的平均分数丰度为0.34，低于中国商业混合物的平均值（syn-DP）（0.41），而表层沉积物（0.44）和牡蛎（0.45）的平均值/ syn高于技术价值。牡蛎中syn-DP的富集与大湖鱼类先前报道的发现一致。然而，syn-DP在海洋表层沉积物中的富集与淡水沉积物中报道的数据相反。据我们所知，这是海洋环境中602年12月，603年12月和604年12月的第一份报告，也是海洋生物中地龙的第一份报告。

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  • 来源
    《Environmental Science & Technology》 |2011年第7期|p.2613-2618|共6页
  • 作者

    Hongliang Jia; Yeqing Sun; Xianjie Liu; Meng Yang; Degao Wang; Hong Qi; Li Shen; Ed Sverko; Eric J. Reiner; Yi-Fan;

  • 作者单位

    International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Dalian Maritime University, Dalian, P. R. China;

    Institute of Environmental Systems Biology, Dalian Maritime University, Dalian, P. R. China;

    International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Dalian Maritime University, Dalian, P. R. China;

    International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Dalian Maritime University, Dalian, P. R. China;

    International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Dalian Maritime University, Dalian, P. R. China;

    IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, P. R. China;

    Ontario Ministry of the Environment, Toronto, Ontario, Canada;

    Science and Technology Branch, Environment Canada, Toronto/Burlington, Ontario, Canada;

    Ontario Ministry of the Environment, Toronto, Ontario, Canada;

    Science and Technology Branch, Environment Canada, Toronto/Burlington, Ontario, Canada International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Dalian Maritime University, Dalian, P. R. China,IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, P. R. 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);
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