Farooq Samiya, Eqani Syed Ali-Musstjab-Akber-Shah, Malik Riffat Naseem, Katsoyiannis Athanasios, Zhang Gan, Zhang Yanlin, Li Jun, Xiang Liu, Jones Kevin C, Shinwari Zabta Khan
Environmental Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, PO 45320, Pakistan.
J Environ Monit. 2011 Nov;13(11):3207-15. doi: 10.1039/c1em10421g. Epub 2011 Oct 17.
Seventeen polycyclic aromatic hydrocarbons (PAHs) were studied in surface waters (including particulate phase) from the Chenab River, Pakistan and ranged from 289-994 and 437-1290 ng l(-1) in summer and winter (2007-09), respectively. Concentrations for different ring-number PAHs followed the trend: 3-rings > 2-rings > 4-rings > 5-rings > 6-rings. The possible sources of PAHs are identified by calculating the indicative ratios; appropriating petrogenic sources of PAHs in urban and sub-urban regions with pyrogenic sources in agricultural region. Factor analysis based on principal component analysis identified the origins of PAHs from industrial activities, coal and trash burning in agricultural areas and municipal waste disposal from surrounding urban and sub-urban areas via open drains into the riverine ecosystem. Water quality guidelines and toxic equivalent factors highlighted the potential risk of low molecular weight PAHs to the aquatic life of the Chenab River. The flux estimated for PAHs contaminants from the Chenab River to the Indus River was >50 tons/year.
对巴基斯坦杰纳布河表层水（包括颗粒相）中的17种多环芳烃（PAHs）进行了研究，2007 - 2009年夏季和冬季其含量分别为289 - 994和437 - 1290 ng l(-1)。不同环数PAHs的浓度呈现以下趋势：三环>二环>四环>五环>六环。通过计算指示性比率确定了PAHs的可能来源；城市和郊区PAHs的成岩源与农业区的热解源相匹配。基于主成分分析的因子分析确定了PAHs的来源，包括工业活动、农业区的煤炭和垃圾燃烧以及周边城市和郊区通过露天排水进入河流生态系统的城市垃圾处理。水质准则和毒性当量因子突出了低分子量PAHs对杰纳布河水生生物的潜在风险。估计从杰纳布河到印度河的PAHs污染物通量>50吨/年。
