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Trace organic contaminants and their sources in surface sediments of Santa Monica Bay, California, USA

机译：美国加利福尼亚州圣莫尼卡湾表层沉积物中的痕量有机污染物及其来源

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摘要

Spatial distribution of selected contaminants in the surface sediments of Santa Monica Bay (SMB), California was investigated. Sediments were analyzed for DDTs (DDT and metabolites), polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), linear alkylbenzenes (LABs) and coprostanol. Effluent samples from the Hyperion Treatment Plant (HTP), which discharges treated municipal waste-water effluents into SMB, were also analyzed. The inter-correlation in the distribution trends of contaminants was examined. The concentrations of contaminants were interpolated in a geographic information system to visualize their spatial distribution in the Bay. Inventories of the contaminants were also estimated. The concentrations of coprostanol, LABs and PCBs are very high only in the vicinity of the sewage outfall whereas PAHs and DDTs occur widespread in the Bay. The poor correlation of DDTs with LABs, PAHs or coprostanol content confirms the historic origin of DDTs and their absence in the contemporary waste-waters. Moderate correlation of DDTs with PCBs implies historic deposits as a major origin of PCBs. There are hot spots of DDTs at water depths of 60 and 100 m and the inventory of DDTs in Bay sediments is insignificant compared to that estimated in the Palos Verdes Shelf which extends from the southern edge of Redondo Canyon around Palos Verdes Peninsula. The concentration of toxic contaminants was examined according to published sediment quality guidelines. About 20 stations contain p, p'-DDE and/or total DDTs above ERM and, PCBs between ERL and ERM indicating potential for adverse biological effects.
机译：调查了加利福尼亚圣莫尼卡湾（SMB）表层沉积物中选定污染物的空间分布。分析了沉积物中的滴滴涕（DDT和代谢产物），多氯联苯（PCB），多环芳烃（PAH），直链烷基苯（LABs）和四氢萘酚。还分析了Hyperion处理厂（HTP）的废水样品，该废水将经过处理的市政废水排放到SMB中。检验了污染物分布趋势的相互关系。在地理信息系统中内插污染物的浓度，以可视化其在海湾中的空间分布。还估算了污染物的清单。仅在污水排污口附近，前列腺素，乳酸菌和多氯联苯的浓度很高，而海湾地区普遍存在多环芳烃和滴滴涕。滴滴涕与LABs，PAHs或coprostanol含量之间的相关性较弱，这证实了滴滴涕的历史渊源以及它们在当代废水中的缺失。滴滴涕与多氯联苯的适度相关意味着历史沉积物是多氯联苯的主要来源。在60和100 m的水深处有DDT的热点，与从Palos Verdes半岛周围的Redondo峡谷的南部边缘延伸的Palos Verdes陆架相比，海湾沉积物中DDT的存量微不足道。根据已发表的沉积物质量指南检查了有毒污染物的浓度。大约20个台站包含p，p'-DDE和/或ERM之上的总DDT，以及ERL和ERM之间的PCB，表明可能产生不利的生物影响。

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  • 来源
    《Marine Environmental Research》 |2010年第5期|p.350-362|共13页
  • 作者

    M.I. Venkatesan; O. Merino; J. Baek; T. Northrup; Y. Sheng; J. Shisko;

  • 作者单位

    5863 Slichter Hall, Institute of Geophysics and Planetary Physics, Univ. California, Los Angeles, CA 90095-1567, USA;

    5863 Slichter Hall, Institute of Geophysics and Planetary Physics, Univ. California, Los Angeles, CA 90095-1567, USA;

    5863 Slichter Hall, Institute of Geophysics and Planetary Physics, Univ. California, Los Angeles, CA 90095-1567, USA;

    5863 Slichter Hall, Institute of Geophysics and Planetary Physics, Univ. California, Los Angeles, CA 90095-1567, USA;

    1255 Bunche Hall, Department of Geography. Univ. California, Los Angeles, CA 90095-1524, USA;

    Environmental Monitoring Division, Hyperion Plant, Playa Del Rey, CA 90291, USA;

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

    ddt; polychlorinated biphenyls; polycyclic aromatic hydrocarbons; linear alkylbenzenes; coprostanol; santa monica bay; sediment pollution; organic compounds;

    机译：ddt;多氯联苯;多环芳烃;直链烷基苯;coprostanol;圣莫尼卡湾;沉积物污染;有机化合物;

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