巴基斯坦梭安河中多环芳烃的出现：对分布、组成、来源及生态风险评估的洞察
Occurrence of polycyclic aromatic hydrocarbons in the Soan River, Pakistan: insights into distribution, composition, sources and ecological risk assessment.
作者信息
Aziz Faiqa, Syed Jabir Husain, Malik Riffat Naseem, Katsoyiannis Athanasios, Mahmood Adeel, Li Jun, Zhang Gan, Jones Kevin C
机构信息
Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Quaid-I-Azam University, 45320 Islamabad, Pakistan.
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China.
出版信息
Ecotoxicol Environ Saf. 2014 Nov;109:77-84. doi: 10.1016/j.ecoenv.2014.07.022. Epub 2014 Aug 28.
Present study investigates the occurrence, distribution and sources of ∑17 polycyclic aromatic hydrocarbons (PAHs) in the surface water of Soan River, Pakistan. The concentrations of total PAHs ranged from 61 to 207 ng/l. Low molecular weight (LMW) PAHs were recorded higher in concentrations (64.7 percent) as compared to high molecular weight (HMW) PAHs (35.6 percent). Principal component analysis (PCA) revealed domestic and industrial wastewater discharge, vehicular exhaust, petroleum residues and biomass combustion as the main sources for PAHs contamination. Using the USEPA toxic equivalency factor (TEF) approach: Benzo(a)Pyrene and Dibenzo(a,h)Anthracene contributed highly carcinogenic exposure equivalent. The surface water of the Soan River is found to be slightly polluted with PAHs thereby posing health risks to aquatic bodies.
本研究调查了巴基斯坦索安河地表水中17种多环芳烃（PAHs）的发生、分布和来源。总PAHs浓度范围为61至207纳克/升。与高分子量（HMW）PAHs（35.6%）相比，低分子量（LMW）PAHs的浓度更高（64.7%）。主成分分析（PCA）表明，生活和工业废水排放、汽车尾气、石油残渣和生物质燃烧是PAHs污染的主要来源。采用美国环境保护局毒性当量因子（TEF）方法：苯并（a）芘和二苯并（a，h）蒽具有高度致癌的暴露当量。发现索安河地表水受到PAHs的轻度污染，从而对水体构成健康风险。
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