title: [Contamination characteristics of polycyclic aromatic hydrocarbons (PAHs) in surface water from Jialing River in Chongqing].
abstract: To understand the composition, sources and contamination characteristics of PAHs in surface water from Jialing River in Chongqing, water samples were collected from 8 different sections in August 2009 and the concentrations of the 16 priority PAHs were determined using GC-MS. The results indicated that the concentration of Sigma PAHs (the total PAHs) in the water body ranged from 467.13 to 987.97 ng x L(-1), with an average concentration of 702.91 ng x L(-1). PAHs concentrations in surface waters were positively correlated with the dissolved organic carbon content. The predominant PAHs in the water body were 2-3 ring PAHs, accounting for 68.90% of Sigma PAHs. The ratios of specific PAHs revealed that the main PAHs source in Cuntan was the combustion of wood and coal, the origin of PAHs in Caotianmen was mostly petrogenic; whereas the main PAHs source in other sampling sections of Jialing River in Chongqing was petroleum combustion. Compared with other areas in China, the PAHs contamination in Jialing River around Chongqing was at a relatively low level, however, the concentrations of BaP in the surface water of 5 sampling sites exceeded the environmental quality standards for surface water in China.
authors.affiliation: Key Laboratory of the Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China. caiwenliang2008@126.com
authors.forename: Wen-Liang
authors.initials: WL
authors.lastname: Cai
authors.forename: Gu-Yuan
authors.initials: GY
authors.lastname: Luo
authors.forename: Xiao-Yi
authors.initials: XY
authors.lastname: Xu
authors.forename: Xian
authors.initials: X
authors.lastname: Du
mesh_terms: D001564:Benzo(a)pyrene / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D001564:Benzo(a)pyrene