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首页> 外文期刊>Science of the total environment >Delineation of Pb contamination pathways in two Pectinidae: The variegated scallop Chlamys varia and the king scallop Pecten maximus
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Delineation of Pb contamination pathways in two Pectinidae: The variegated scallop Chlamys varia and the king scallop Pecten maximus

机译：描绘两种果蝇中的铅污染途径：杂色扇贝衣原体和扇贝王果胶

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摘要

Bioaccumulation of Pb was determined in Chlamys varia and Pecten maximus exposed to ~(210)Pb via seawater, food and sediment. Both scallops readily concentrated dissolved Pb with whole-body 7-d concentration factors of 250±40 and 170±70, respectively. In both species, more than 70% of Pb taken up from seawater was strongly retained within tissues (biological half-life>1.5 month) whereas Pb ingested with phytoplankton was poorly assimilated (<20%). As P. maximus lives buried in the sediment, this exposure pathway was assessed and showed low bioaccumulation efficiency for sediment-bound Pb (transfer factor <0.015). Despite the poor transfer efficiency of Pb from food and sediment, the use of a global bioaccumulation model indicated that the particulate pathway (food and/or sediment) constituted the major bioaccumulation route of Pb in both scallops. Whatever the exposure pathway, the digestive gland and kidneys always played a major role in Pb accumulation. In scallop tissues, Pb was predominantly associated with the insoluble subcellular fraction, suggesting a low bioavailability of Pb for scallop consumers.
机译：测定了经由海水，食物和沉积物暴露于〜（210）Pb的衣原体和最大果中Pb的生物蓄积性。两种扇贝都易于以全身7-d浓缩因子分别为250±40和170±70的方式浓缩溶解的Pb。在这两个物种中，从海水中吸收的铅中有70％以上被牢固地保留在组织内（生物半衰期> 1.5个月），而被浮游植物摄取的铅的同化性差（<20％）。由于极大假单胞菌生活在沉积物中，因此评估了该暴露途径，结果表明沉积物结合的铅的生物累积效率较低（转移因子<0.015）。尽管铅从食物和沉积物中的转移效率很低，但使用全球生物富集模型表明，微粒途径（食物和/或沉积物）构成了两种扇贝中铅的主要生物富集途径。不论暴露途径如何，消化腺和肾脏在铅的积累中始终起着主要作用。在扇贝组织中，Pb主要与不溶性亚细胞部分相关，这表明扇贝消费者的Pb生物利用度较低。

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  • 来源
    《Science of the total environment》 |2009年第11期|3503-3509|共7页
  • 作者

    Marc Metian; Michel Warnau; Francois Oberhaensli; Paco Bustamante;

  • 作者单位

    International Atomic Energy Agency - Marine Environment Laboratories. 4 Quai Antoine ler, MC-98000, Principality of Monaco Littoral Environnement et Societes (LIENSs), UMR 6250 CNRS-Universite de La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01 France Hawaii Institute of Marine Biology, University of Hawaii at Manoa, Kaneohe, H1 96744, USA;

    International Atomic Energy Agency - Marine Environment Laboratories. 4 Quai Antoine ler, MC-98000, Principality of Monaco Littoral Environnement et Societes (LIENSs), UMR 6250 CNRS-Universite de La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01 France;

    International Atomic Energy Agency - Marine Environment Laboratories. 4 Quai Antoine ler, MC-98000, Principality of Monaco;

    Littoral Environnement et Societes (LIENSs), UMR 6250 CNRS-Universite de La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01 France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    metal; uptake kinetics; retention; bioavailability; mollusc;

    机译：金属;吸收动力学;保留;生物利用度软体动物;

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