title: PAHs in aquatic sediment in Hangzhou, China: analytical methods, pollution pattern, risk assessment and sources.
abstract: Eleven surface sediment samples, from Hangzhou section of Qiantang River and Jinghang Canal, west Lake the inland river were collected to investigate 17 polycyclic aromatic hydrocarbons (PAHs) pollution in aquatic sediments of Hangzhou. Accelerated solvent extraction(ASE) was used to extract PAHs from sediments with satisfactory recoveries. It was found that the total PAHs in the sediments ranged from 308.4 to 3037 ng/g dw, and PAHs pollution in sediments from Jinghang Canal were the heaviest. Lowest effect level (LEL) and severe effect level (SEL) sediment quality guidelines were introduced to perform risk assessment for PAHs pollution in aquatic sediments. Only one sample in Jinghang Canal had adverse impact on benthic organism. 2-3 ring PAHs had a noticeable contribution to total PAHs, especially NA, PHEN. A quantity method was used to determine the major source, the results showed petroleum origin was the chief source to PAHs pollution in all sediments with the exception of sediments from Jinghang Canal where combustion sources had a larger contribution.
authors.affiliation: Department of Environmental Science, Zhejiang University, Hangzhou 310028, China.
authors.forename: Li-zhong
authors.initials: LZ
authors.lastname: Zhu
authors.forename: Xue-fen
authors.initials: XF
authors.lastname: Cai
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
mesh_terms: D002681:China; D002851:Chromatography, High Pressure Liquid; D004784:Environmental Monitoring / Q000706:statistics & numerical data*; D004785:Environmental Pollutants / Q000032:analysis*; D019015:Geologic Sediments / Q000032:analysis*; D010578:Petroleum / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000737:chemistry; D018570:Risk Assessment
chemical_list: D004785:Environmental Pollutants; D010578:Petroleum; D011084:Polycyclic Aromatic Hydrocarbons