title: Polycyclic aromatic hydrocarbons in water, sediment and soil of the Songhua River Basin, China.
abstract: The Songhua River is the third largest river in China and the primary source of drinking and irrigation water for northeastern China. The distribution of 16 priority polycyclic aromatic hydrocarbons (PAHs) in water [dissolved water (DW) and suspended particulate matter (SPM)], sediment, and soil in the river basin was investigated, and the associated risk of cancer from these PAHs was also assessed. The total concentration of PAHs ranged from 13.9 to 161 ng L(-1) in DW, 9.21 to 83.1 ng L(-1) in SPM, 20.5 to 632 ng g(-1) dw (dry weight) in sediment, and from 30.1 to 870 ng g(-1) dw in soil. The compositional pattern of PAHs indicated that three-ring PAHs were predominant in DW and SPM samples, while four-ring PAHs dominated in sediment and soil samples. The spatial distribution of PAHs revealed some site-specific sources along the river, with principal component analysis indicating that these were from pyrogenic sources (such as coal and biomass combustion, and vehicle emissions) and coke oven emission distinguished as the main source of PAHs in the Songhua River Basin. Based on the ingestion of PAH-contaminated drinking water from the Songhua River, cancer risk was quantitatively estimated by combining the Incremental Lifetime Cancer Risk assessment model and BaP-equivalent concentration for five age groups of people (adults, teenagers, children, toddlers, and infants). Overall, the results suggest that the estimated integrated lifetime cancer risk for all groups was in acceptable levels. This study is the first attempt to provide information on the cancer risk of PAHs in drinking water from the Songhua River.
authors.affiliation: International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 202 Haihe Road, Nangang District, Harbin, 150090, Heilongjiang, China.
authors.forename: Wan-Li
authors.initials: WL
authors.lastname: Ma
authors.forename: Li-Yan
authors.initials: LY
authors.lastname: Liu
authors.forename: Hong
authors.initials: H
authors.lastname: Qi
authors.forename: Zi-Feng
authors.initials: ZF
authors.lastname: Zhang
authors.forename: Wei-Wei
authors.initials: WW
authors.lastname: Song
authors.forename: Ji-Min
authors.initials: JM
authors.lastname: Shen
authors.forename: Zhong-Lin
authors.initials: ZL
authors.lastname: Chen
authors.forename: Nan-Qi
authors.initials: NQ
authors.lastname: Ren
authors.forename: Josey
authors.initials: J
authors.lastname: Grabuski
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Li
mesh_terms: D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D045483:Rivers / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D014874:Water Pollutants, Chemical
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