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首页> 外文期刊>Environmental Science & Technology >Declines in Polybrominated Diphenyl Ether Contamination of San Francisco Bay following Production Phase-Outs and Bans
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Declines in Polybrominated Diphenyl Ether Contamination of San Francisco Bay following Production Phase-Outs and Bans

机译：逐步淘汰生产和禁令后，旧金山湾的多溴联苯醚污染下降

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摘要

California has implemented unique consumer product flammability standards. Polybrominated diphenyl ether (PBDE) flame retardants were once widely incorporated into products to meet these standards, but concerns regarding toxicity and accumulation in humans and biota led to nationwide phase-outs and state bans. A decade of PBDE monitoring in San Francisco Bay has resulted in a data set that covers periods during and after PBDE use and consists of hundreds of measurements of water, sediment, and biota. While PBDEs remain widely detected in biota, levels have declined by nearly half in sport fish and 74-95% in bivalves and bird eggs. Concentrations of BDE-47 in sediment have dropped by over one-third from 2002 to 2012; in water, a decline is not yet evident. The dominant congener in sediment, DecaBDE component BDE-209, showed no temporal trend. U.S. production of DecaBDE ended in 2013; future monitoring may reveal declines. Overall, the data indicate that reduced production can result in relatively rapid reductions in the concentrations of some hydrophobic contaminants in biota and sediment, particularly when implemented after only a few decades of heavy use. Recent changes to California's flammability standards may lessen the use of other flame retardants and similarly reduce Bay contamination.
机译：加利福尼亚州已实施了独特的消费品易燃性标准。多溴二苯醚（PBDE）阻燃剂曾经被广泛地掺入产品中以满足这些标准，但是由于担心对人和生物的毒性和积累，导致了全国范围内的淘汰和国家禁令。在旧金山湾对PBDE进行十年监测后，得出了一个数据集，涵盖了PBDE使用期间和使用后的时期，包括数百种水，沉积物和生物区系的测量值。虽然在生物区系中仍广泛检测到多溴二苯醚，但运动鱼的水平下降了近一半，双壳类和鸟卵的下降了74-95％。从2002年到2012年，沉积物中BDE-47的浓度下降了三分之一以上；在水中，下降尚不明显。沉积物中的主要同类物，十溴二苯醚成分BDE-209，没有显示时间趋势。美国的十溴二苯醚生产于2013年结束;未来的监测可能会显示下降。总体而言，数据表明减产可导致生物区系和沉积物中某些疏水性污染物的浓度相对较快地降低，尤其是在仅大量使用几十年后实施的情况下。加利福尼亚州可燃性标准的最新变更可能会减少其他阻燃剂的使用，并类似地减少海湾污染。

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  • 来源
    《Environmental Science & Technology》 |2015年第2期|777-784|共8页
  • 作者

    Rebecca Sutton; Margaret D. Sedlak; Donald Yee; Jay A. Davis; David Crane; Richard Grace; Nirmela Arsem;

  • 作者单位

    San Francisco Estuary Institute, 4911 Central Avenue, Richmond, California 94804, United States;

    San Francisco Estuary Institute, 4911 Central Avenue, Richmond, California 94804, United States;

    San Francisco Estuary Institute, 4911 Central Avenue, Richmond, California 94804, United States;

    San Francisco Estuary Institute, 4911 Central Avenue, Richmond, California 94804, United States;

    Califomia Department of Fish and Wildlife, 2005 Nimbus Road, Rancho Cordova, California 95670, United States;

    AXYS Analytical Services Ltd., 2045 Mills Road West, Sidney, British Columbia V8L 5X2, Canada;

    East Bay Municipal Utility District, 375 11th Street, Oakland, California 94612, 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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