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Distribution and sources of polycyclic aromatic hydrocarbons in the middle and lower reaches of the Yellow River, China

机译：黄河中下游多环芳烃的分布与来源

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摘要

In this study, concentrations, distribution between different phases, transition along the Middle and Lower reaches of the Yellow River and possible sources of PAHs were assessed. Results demonstrated that the relative proportions of 15 PAHs in all stations of the main River were similar, with concentrations of benzo[a]pyrene all above drinking water standards in most of the stations sampled. PAHs concentrations in tributaries were higher than those in the corresponding sites in the main River. PAHs concentrations of suspended particles were mainly correlated with contents of total organic carbon. However, PAHs concentrations in sediments were mainly correlated to the volume of particles with size smaller than 0.01 mm. The distribution of PAHs in all media sampled indicated that sediments could act as a sink/source for PAHs in different sections and source analysis revealed that PAHs mainly originated from coal burning, although in some tributaries PAH inputs could come from combustion of petroleum. (c) 2006 Elsevier Ltd. All rights reserved.
机译：在这项研究中，评估了浓度，不同阶段之间的分布，沿黄河中下游的过渡以及PAHs的可能来源。结果表明，在主要河流的所有监测站中，15种多环芳烃的相对比例相似，大多数采样站的苯并[a] py浓度均高于饮用水标准。支流中的PAHs浓度高于主河中相应站点的PAHs浓度。悬浮颗粒的PAHs浓度主要与总有机碳含量相关。然而，沉积物中的PAHs浓度主要与小于0.01 mm的颗粒体积有关。多环芳烃在所有采样介质中的分布表明，沉积物可以作为不同区域多环芳烃的汇/源，来源分析表明，多环芳烃主要来源于燃煤，尽管在一些支流中，多环芳烃的输入可能来自石油燃烧。 （c）2006 Elsevier Ltd.保留所有权利。

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