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首页> 外文期刊>Environmental Pollution >Polychlorinated naphthalenes (PCNs) in the surface soils of the Pearl River Delta, South China: Distribution, sources, and air-soil exchange
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Polychlorinated naphthalenes (PCNs) in the surface soils of the Pearl River Delta, South China: Distribution, sources, and air-soil exchange

机译：华南珠江三角洲表层土壤中的多氯萘（PCN）：分布，来源和气土交换

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摘要

Polychlorinated naphthalenes (PCNs) are now under review by the Stockholm Convention as a candidate for POPs for their persistence, toxicity, bioaccumulation, and long-range atmospheric transport. Data regarding PCN levels and their environmental fate are sparse in China. The PCN concentration and distribution in soils of the Pearl River Delta were reported, and the average total concentration was 59.9 ± 86.7 pg/g. Tri-CNs was the dominant homologue group, and CN 24 was the most abundant congener. A gradient of PCN levels between more and less developed areas was observed. Based on fugacity fraction results, CN 51 is proposed as a possible source marker for specific combustion emis sions. Air-soil exchange of PCNs was estimated by calculating the soil and air fugacity. Fugacity fraction values indicated that tri- to penta-CNs were closer to equilibrium in winter and toward net volatilization in summer, while hexa-CNs experienced net air-to-soil transfer in both seasons.
机译：《斯德哥尔摩公约》目前正在审查多氯萘（PCN），因为它们的持久性，毒性，生物蓄积性和远距离大气迁移使其成为持久性有机污染物的候选者。在中国，有关PCN含量及其环境命运的数据很少。据报道珠江三角洲土壤中的PCN浓度和分布，平均总浓度为59.9±86.7 pg / g。 Tri-CNs是主要的同源基团，CN 24是最丰富的同源物。观察到了PCN水平在更多不发达地区之间的梯度。根据烟度分数结果，建议将CN 51用作特定燃烧排放的可能来源标记。通过计算土壤和空气逸度估算PCN的空气-土壤交换。逸度分数值表明，三氯化萘到五氯化萘在冬天更接近平衡，而在夏季接近净挥发，而六氯化萘在两个季节都经历了从空气到土壤的净转移。

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  • 来源
    《Environmental Pollution》 |2012年第11期|p.1-7|共7页
  • 作者

    Yan Wang; Zhineng Cheng; Jun Li; Chunling Luo; Yue Xu; Qilu Li; Xiang Liu; Gan Zhang;

  • 作者单位

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China,Graduate University of Chinese Academy of Sciences, Beijing 100039, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

    State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;

  • 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

    air-soil exchange; polychlorinated naphthalenes; pearl river delta; fugacity fraction; soil;

    机译：气土交换;多氯萘;珠江三角洲逸度分数泥;

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