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《Environmental Science》 2013-10
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Residues and Risk Assessment of Polycyclic Aromatic Hydrocarbons in the Surface Sediments and Marine Organisms from Dapeng Bay,Shenzhen

SUN Run-xia;KE Chang-liang;GU Yang-guang;LU Teng-teng;DU Fei-yan;MA Sheng-wei;LIN Qin;Guangdong Provincial Key Laboratory of Fishery Ecology and Environment,Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization,Ministry of Agriculture,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences;College of Marine Sciences,Shanghai Ocean University;Postdoctor Research Station,College of Oceanography and Environmental Science,Xiamen University;  
In order to assess contamination by polycyclic aromatic hydrocarbons( PAHs),surface sediments and marine organism samples of fish,shrimp and shellfish were collected from the Dapeng Bay,Shenzhen in October 2011. Concentrations fof sixteen priority PAHs were determined by gas chromatography and mass spectrometry( GC-MS). The total concentrations of PAHs( Σ PAHs) ranged from 216. 56 ng·g- 1to 1 314. 92 ng·g- 1dry weight in sediment samples and from 70. 88 ng·g- 1to 251. 90 ng·g- 1wet weight in biological samples,respectively. The mean concentration was the highest in fish( 171. 52 ng·g- 1),followed by mussel( 134. 75 ng·g- 1) and shrimp( 123. 35 ng·g- 1) in the studied marine organisms. Compared with those in other water bodies around the world,PAHs pollution in the studied area was at medium level. The dominant fraction in the surface sediments was the 4-ring PAHs. Identification of PAH sources suggested that PAHs in Dapeng Bay were likely originated from both pyrolytic and petrogenic sources. The most abundant PAHs were 3-ring PAHs in the tissues of organisms,which may be governed by their feeding behaviors,habitats,and bioavailability of PAHs. Ecological risk assessment indicated that PAHs in surface sediments might have adverse impacts on local ecosystem. Health risk analysis revealed that the potency equivalent concentrations of BaP to the total PAHs in marine organisms from Dapeng Bay were relatively high and may cause some concerns on human health by consumption.
【Fund】: 国家科技支撑计划重大项目(2009BADB7B02);; 中央级公益性科研院所基本科研业务费专项(2012TS15 2012TS25)
【CateGory Index】: X820.4
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