title: Distribution, potential sources and ecological risks of two persistent organic pollutants in the intertidal sediment at the Shuangtaizi Estuary, Bohai Sea of China.
abstract: Spatial distribution, source apportionment, and potential ecological risks of sixteen polycyclic aromatic hydrocarbons (PAHs) and seven endocrine disrupting compounds (EDCs) in the intertidal sediment at the Shuangtaizi Estuary, Bohai Sea of China were analyzed. Results showed that the total PAH concentrations ranged from 28.79ngg-1dw to 281.97ngg-1dw (mean: 115.92ngg-1dw) and the total EDC concentrations from 0.52ngg-1dw to 126.73ngg-1dw (mean: 37.49ngg-1dw). The distribution pattern for the PAHs was generally different from that of the EDCs possibly due to their distinct sources and n-octanol-/water partition coefficients (KOW). Qualitative and quantitative analytical results showed that PAH sources were mainly from a mixture of pyrogenic and petrogenic contributions. The higher levels at the southeast of Geligang indicated that the EDC pollutants may have mainly originated from the plastic industry and other chemical plants located along the Liao River. Ecological risk assessment revealed that PAHs exhibited low ecotoxicological effects, whereas EDCs, especially 4-tert-octylphenol and bisphenol A, had high ecological hazard to the estuarine biota.
authors.affiliation: National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, PR China. Electronic address: xtyuan@nmemc.org.cn.
authors.forename: Xiutang
authors.initials: X
authors.lastname: Yuan
authors.affiliation: Fisheries College, Ocean University of China, Qingdao 266100, PR China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Yang
authors.affiliation: College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, PR China.
authors.forename: Anguo
authors.initials: A
authors.lastname: Zhang
authors.affiliation: National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, PR China.
authors.forename: Xindong
authors.initials: X
authors.lastname: Ma
authors.affiliation: National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Gao
authors.affiliation: National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, PR China.
authors.forename: Guangshui
authors.initials: G
authors.lastname: Na
authors.affiliation: National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, PR China.
authors.forename: Humin
authors.initials: H
authors.lastname: Zong
authors.affiliation: National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, PR China.
authors.forename: Guize
authors.initials: G
authors.lastname: Liu
authors.affiliation: National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian 116023, PR China.
authors.forename: Yongguang
authors.initials: Y
authors.lastname: Sun
mesh_terms: D000818:Animals; D002681:China; D054750:Ecotoxicology / Q000379:methods; D052244:Endocrine Disruptors / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods; D063366:Estuaries; D019015:Geologic Sediments / Q000032:analysis* / Q000737:chemistry; D010636:Phenols / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D018570:Risk Assessment; D045483:Rivers / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D052244:Endocrine Disruptors; D010636:Phenols; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; C105260:4-tert-octylphenol
keywords: EDCs; Ecological risk; Intertidal sediment; PAHs; POPs; Shuangtaizi estuary