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Historical deposition behaviors of PAHs in the Yangtze River Estuary: Role of the sources and water currents

机译：长江口多环芳烃的历史沉积行为：水源和水流的作用

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摘要

Historical profiles and sources of PAHs at two typical sediment cores (i.e., the shipping route site and the shoal site) were fully compared to probe the controlling factors, specifically the water currents, for the PAHs deposition processes in the Yangtze River Estuary. Compared with ocean water currents, river runoff affected by the water impoundment of the Three Gorges Dam greatly affected the PAHs levels and percent contribution of PAHs sources in the two cores. River runoff hindered the PAHs deposition in shoal site, while a contrary phenomenon was observed for the shipping route site. Though the PAHs in the estuary were mainly from river catchment, only low ring PAHs in the shipping route site were mainly from the upper reach of the river. Coarse sediments with higher organic carbon content also accounted for the higher deposition levels of PAHs in the shipping route site.
机译：充分比较了两个典型沉积物核心（即运输路线站点和浅滩站点）的PAHs的历史概况和来源，以探讨控制因素，尤其是长江口PAHs沉积过程的水流。与三河大水相比，受三峡大坝蓄水影响的河流径流极大地影响了两个核心区的多环芳烃含量和百分含量。河流径流阻碍了浅滩位置PAHs的沉积，而在航运路线站点则观察到相反的现象。尽管河口的多环芳烃主要来自河流集水区，但只有航线沿线的低环多环芳烃主要来自河流上游。在运输路线中，有机碳含量较高的粗沉积物也导致了PAHs的较高沉积水平。

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  • 来源
    《Chemosphere》 |2013年第6期|2020-2026|共7页
  • 作者

    Dongxin Wang; Chenghong Feng; Luxia Huang; Junfeng Niu; Zhenyao Shen;

  • 作者单位

    Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China;

    Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China;

    Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China;

    Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China;

    Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    water currents; sources; historical deposition; PAHs; correlation analysis;

    机译：水流资料来源;历史沉积;多环芳烃;相关分析;

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