title: Sources and ecological risk assessment of PAHs in surface sediments from Bohai Sea and northern part of the Yellow Sea, China.
abstract: Sources and ecological risk of sixteen priority PAHs in surface sediments from Bohai Sea (BS) and northern part of the Yellow Sea (NPYS) were investigated. The total concentrations of PAHs varied in ranges 149.24-1211.81 and 148.28-907.47 ng/g for BS and NPYS, respectively. Principal component analysis-multiple linear regression (PCA-MLR) suggested that coal combustion, vehicular emission and coke oven could be the primary PAH contributors, accounting for 56.6%, 29.2% and 14.2% of PAH concentrations, respectively. Analysis with sediment quality guidelines (SQGs) indicated that acenaphthylene, fluorene, phenanthrene, fluoranthene, pyrene and dibenzo(a,h)anthracene may occasionally cause adverse biological effects in some stations. Organic carbon (OC)-normalized analysis and mean effects range-median quotient (M-ERM-Q) suggested that the combined ecological risk of PAHs was generally low. The toxic equivalent concentrations of carcinogenic PAHs were 12.87-64.6 ng/g-BaP(eq) and 5.95-68.80 ng/g-BaP(eq) in BS and NPYS, respectively, suggesting low carcinogenic risk for both BS and NPYS.
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
authors.forename: Jiafu
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
authors.forename: Han
authors.initials: H
authors.lastname: Dong
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
authors.forename: Dahai
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Han
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
authors.forename: Chenjian
authors.initials: C
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
authors.forename: Shaopeng
authors.initials: S
authors.lastname: Liu
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
authors.forename: Xiangmin
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
authors.forename: Qianyao
authors.initials: Q
authors.lastname: Ma
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China. Electronic address: lixg@ouc.edu.cn.
authors.forename: Xianguo
authors.initials: X
authors.lastname: Li
mesh_terms: D002681:China; D003031:Coal; D004463:Ecology; D004784:Environmental Monitoring; D005449:Fluorenes / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D019015:Geologic Sediments / Q000737:chemistry*; D016014:Linear Models; D010616:Phenanthrenes / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000633:toxicity; D011721:Pyrenes / Q000032:analysis; D018570:Risk Assessment; D001335:Vehicle Emissions; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D003031:Coal; D005449:Fluorenes; D010616:Phenanthrenes; D011084:Polycyclic Aromatic Hydrocarbons; D011721:Pyrenes; D001335:Vehicle Emissions; D014874:Water Pollutants, Chemical; C007738:fluoranthene; C041509:fluorene; C031181:phenanthrene; C030984:pyrene
keywords: Polycyclic aromatic hydrocarbons (PAHs); Risk assessment; Sediment; Source; Toxic equivalent quantity (TEQ)