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首页> 外文期刊>Environmental Pollution >Transport of terrigenous polycyclic aromatic hydrocarbons affected by the coastal upwelling in the northwestern coast of South China Sea
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Transport of terrigenous polycyclic aromatic hydrocarbons affected by the coastal upwelling in the northwestern coast of South China Sea

机译：南海西北海岸沿海隆升对陆源多环芳烃的运输

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摘要

Coastal upwelling prevails in the coast of Hainan Island, the northern South China Sea (SCS) during summer. We studied the influences of the upwelling on the horizontal and vertical transport of terrigenous polycyclic aromatic hydrocarbons (PAHs). PAHs in dissolved and suspended particulate phase of water samples were determined in the upper (depth < 1 m) and water column (depth > 10 m). PAH levels decreased sharply from inshore to offshore to open sea. The results showed that terrestrial input was the main source of coastal PAHs. Perylene, an important indicator of land plant-derived PAH, showed the significant correlation with PAHs (p < 0.005). This implied that fluvial transport was the primary pathway of terrigenous PAHs into the coast of northern SCS. Variations of the concentrations, compositions and diagnostic ratios of PAHs, accompanied the partition equilibrium in the water column, could indicate the selective degradation of PAHs by the plankton affected by upwelling. Different from the "traditional" transport pathway of PAHs in the water column (surface enrichment-depth depletion distribution), the upwelling could provide the original driver to elevate the upward diffusion of sediment entrained contaminants towards the intermediate even the upper waters. It could also enhance the outward diffusion of terrigenous PAHs accompanied by the offshore transport of the upper waters. Therefore, the transport pathway of PAHs can be summarized by the coastal upwelling rising PAHs with their subsequent transport offshore and settling in the adjacent open sea. (C) 2017 Elsevier Ltd. All rights reserved.
机译：夏季，沿海上升流普遍存在于南海北部的海南岛海岸。我们研究了上升流对陆源多环芳烃（PAHs）水平和垂直传输的影响。在上部（深度<1 m）和水柱（深度> 10 m）中确定了水样品溶解和悬浮颗粒相中的PAHs。从沿海到近海再到公海，PAH水平急剧下降。结果表明，地面投入是沿海多环芳烃的主要来源。 ylene是陆地植物衍生的PAH的重要指标，与PAH呈显着相关性（p <0.005）。这表明河流运输是陆源多环芳烃进入南海北部海岸的主要途径。 PAHs浓度，组成和诊断比率的变化，伴随水柱中的分配平衡，可能表明受上升流影响的浮游生物对PAHs的选择性降解。与水柱中PAHs的“传统”输送途径不同（表面富集深度消耗分布），上升流可以提供原始驱动力，以提高沉积物夹带污染物向中间甚至上层水的向上扩散。它还可以促进陆源多环芳烃的向外扩散，同时伴随着上层水的近海运输。因此，PAHs的运输途径可以由沿海上升的PAHs及其随后的离岸运输和在邻近公海的定居来概括。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Environmental Pollution》 |2017年第10期|60-68|共9页
  • 作者

    Ya Miaolei; Wu Yuling; Li Yongyu; Wang Xinhong;

  • 作者单位

    Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China|Xiamen Univ, Coll Environm & Ecol, Xiamen 361102, Peoples R China;

    Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China|Xiamen Univ, Coll Environm & Ecol, Xiamen 361102, Peoples R China;

    Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China|Xiamen Univ, Coll Environm & Ecol, Xiamen 361102, Peoples R China;

    Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China|Xiamen Univ, Coll Environm & Ecol, Xiamen 361102, Peoples R 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

    Coastal upwelling; Polycyclic aromatic hydrocarbons; Water column; Terrigenous input; Horizontal transport; Vertical transport;

    机译：海岸上升流;多环芳烃;水柱;陆源输入;水平输送;垂直输送;

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