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首页> 外文期刊>Environmental Science and Pollution Research >Distribution, sources, and ecological risk assessment of polycyclic aromatic hydrocarbons in surface sediments from the Haihe River, a typical polluted urban river in Northern China
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Distribution, sources, and ecological risk assessment of polycyclic aromatic hydrocarbons in surface sediments from the Haihe River, a typical polluted urban river in Northern China

机译：北方典型的污染城市河流海河地表沉积物中多环芳烃中多环芳烃的分布，来源和生态风险评估

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摘要

The distribution, sources, and ecological risk of polycyclic aromatic hydrocarbons (PAHs) were investigated in surface sediments from the Haihe River. Total PAH concentrations varied from 171.4 to 9511.2 ng g(-1) with an average of 2125.4 ng g(-1), suggesting serious pollution of the Haihe River in comparison with other reported rivers worldwide. PAH contaminants differed significantly among 17 sampling locations with high values occurring in industrial areas and densely populated areas. The composition of PAHs was characterized by high abundance of 4-ring and 5-ring PAHs, and benzo[a]anthracene, chrysene, and benzo[a]pyrene were the predominant components. Molecular diagnostic ratios have confirmed that PAHs in Haihe River sediments resulted from mixed sources, primarily including various combustion processes. Ecological risk assessment using the Sediments Quality Guidelines indicated that PAHs in sediments could cause certain negative effects on aquatic organisms in most survey regions.
机译：研究了多环芳烃（PAHS）的分布，来源和生态风险在海河的表面沉积物中研究。总PAH浓度从171.4〜9511.2 ng（-1）不同，平均为2125.4 ng（-1），表明海河的严重污染与全世界其他报告的河流相比。 PAH污染物在17个采样位置在工业区发生的高值和密集地区的区域中有显着不同。通过高丰度的4环和5环PAH的特征在于PAHS的组成，并苯并[a]蒽，氯苯和苯并[a]芘是主要的组分。分子诊断比证实，海河沉积物中的PAHS由混合来源产生，主要包括各种燃烧过程。使用沉积物质量指南的生态风险评估表明，沉积物中的PAHS可能对大多数调查区域的水生生物产生某些负面影响。

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