title: Polycyclic aromatic hydrocarbons (PAHs) and alkylated PAHs in the coastal seawater, surface sediment and oyster from Dalian, Northeast China.
abstract: A total of 46 polycyclic aromatic hydrocarbons (PAHs, 21 parent and 25 alkylated) were determined in seawater, surface sediment and oyster from coastal area of Dalian, North China. The concentration of Σ46PAHs in seawater, sediment, and oyster were 136-621 ng/L, 172-4700 ng/g dry weight (dw) and 60.0-129 ng/g wet weight (ww) in winter, and 65.0-1130 ng/L, 71.1-1090 ng/g dw and 72.8-216 ng/g ww in summer, respectively. High PAH levels were found in industrial area both in winter and summer. Selected PAH levels in sediments were compared with Sediments Quality Guidelines (ERM-ERL, TEL-PEL indexes) for evaluation probable toxic effects on marine organism and the results indicate that surface sediment from all sampling sites have a low to medium ecotoxicological risk. Daily intake of PAHs via oyster as seafood by humans were estimated and the results indicated that oyster intake would not pose a health risk to humans even 30 days after a oil spill accident near by. Water-sediment exchange analysis showed that, both in winter and summer, the fluxes for most high molecular weight PAHs were from seawater to sediment, while for low molecular weight PAHs, an equilibrium was reached between seawater and sediment.
authors.affiliation: International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
authors.forename: Wen-Jun
authors.initials: WJ
authors.lastname: Hong
authors.affiliation: International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Jia
authors.affiliation: International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China; IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: ijrc_pts_paper@yahoo.com.
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Li
authors.affiliation: Institute of Environmental Systems Biology, Dalian Maritime University, Dalian, China. Electronic address: yqsun@dlmu.edu.cn.
authors.forename: Yeqing
authors.initials: Y
authors.lastname: Sun
authors.affiliation: International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China; Dalian Ocean University, Dalian 116023, China.
authors.forename: Xianjie
authors.initials: X
authors.lastname: Liu
authors.affiliation: Dalian Ocean University, Dalian 116023, China.
authors.forename: Luo
authors.initials: L
authors.lastname: Wang
mesh_terms: D000328:Adult; D000818:Animals; D002681:China; D004784:Environmental Monitoring; D005506:Food Contamination / Q000032:analysis; D019015:Geologic Sediments / Q000032:analysis; D006801:Humans; D010125:Ostreidae; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D018570:Risk Assessment; D017747:Seafood / Q000032:analysis; D012621:Seasons; D012623:Seawater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical
keywords: Alkyl-PAHs; Coastal environment; Ecotoxicological risk; PAHs; Water-sediment exchange