...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oceanography >Persistent Organic Pollutants (POPs), Polycyclic Aromatic Hydrocarbons (PAHs), and Plastics
【24h】

Persistent Organic Pollutants (POPs), Polycyclic Aromatic Hydrocarbons (PAHs), and Plastics

机译：持久性有机污染物（POP），多环芳烃（PAH）和塑料

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Four decades of research have provided a reasonable understanding of the outline of the biogeochemical cycles of persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) in coastal ocean and surface ocean ecosystems, including atmospheric transport to the sea, air-sea exchange processes, and the role of particulate matter in removing these chemicals from surface waters. It is clear that deep ocean fish are contaminated with POPs. However, despite available sampling and analytical capabilities, deep ocean ecosystems are much less sampled and understood. A multidecade assessment of POPs and PAHs in US coastal waters using bivalve sentinel organisms documents high concentrations near urban areas and also some stations where concentrations have begun to decline. The results are consistent with coastal sediments near urban areas being a leaky sink for POPs and PAHs, and sources from land continuing to contribute these contaminants to the sea. Other studies document coastal and continental margin surface sediments as a sink, albeit a potentially leaky sink, for POPs and PAHs. Floating plastic debris, including small pellets, has reemerged as an oceanic environmental concern. A "Pellet Watch" assessing plastic pellets and associated POPs and PAHs is underway. Enhanced studies of deep-ocean ecosystems are recommended. The findings are also relevant to biogeochemical cycles for emerging organic pollutants.
机译：四十年的研究提供了对沿海海洋和表层海洋生态系统中持久性有机污染物（POP）和多环芳烃（PAH）的生物地球化学循环概述的合理理解，包括大气向海洋的运输，海空交换过程以及颗粒物在从地表水中去除这些化学物质中的作用。显然，深海鱼被持久性有机污染物污染。但是，尽管有可用的采样和分析功能，但对深海生态系统的采样和了解却少得多。使用双壳类前哨生物对美国沿海水域中的POPs和PAHs进行的十年评估显示，市区附近以及一些浓度开始下降的站点附近的高浓度。结果与市区附近的沿海沉积物是持久性有机污染物和多环芳烃的泄漏汇以及来自土地的源继续将这些污染物贡献给海洋的现象相吻合。其他研究表明，对于持久性有机污染物和多环芳烃而言，沿海和大陆边缘地表沉积物是一个汇，尽管可能是泄漏的汇。漂浮的塑料碎片，包括小颗粒，由于海洋环境问题而重新出现。正在评估塑料颗粒以及相关的持久性有机污染物和多环芳烃的“药丸观察”。建议加强对深海生态系统的研究。这些发现也与新兴有机污染物的生物地球化学循环有关。

著录项

  • 来源
    《Oceanography》 |2014年第1期|196-213|共18页
  • 作者

    JOHN W. FARRINGTON; HIDESHIGE TAKADA;

  • 作者单位

    Woods Hole Oceanographic Institution, Woods Hole, MA, USA;

    Laboratory of Organic Geochemistry, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号