Distribution, potential sources and ecological risks of two persistent organic pollutants in the intertidal sediment at the Shuangtaizi Estuary, Bohai Sea of China
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
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 28.79�ng�g−�1dw to 281.97�ng�g−�1dw (mean: 115.92�ng�g−�1dw) and the total EDC concentrations from 0.52�ng�g−�1dw to 126.73�ng�g−�1dw (mean: 37.49�ng�g−�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. � 2016 Elsevier Ltd
National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian, China; Fisheries College, Ocean University of China, Qingdao, China; College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
Recommended Citation:
Yuan X.,Yang X.,Zhang A.,et al. Distribution, potential sources and ecological risks of two persistent organic pollutants in the intertidal sediment at the Shuangtaizi Estuary, Bohai Sea of China[J]. Marine Pollution Bulletin,2017-01-01,114(1)