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  • Title: Polycyclic aromatic hydrocarbons in surface sediments and marine organisms from the Daya Bay, South China.
    Author: Sun RX, Lin Q, Ke CL, Du FY, Gu YG, Cao K, Luo XJ, Mai BX.
    Journal: Mar Pollut Bull; 2016 Feb 15; 103(1-2):325-332. PubMed ID: 26778499.
    Abstract:
    Polycyclic aromatic hydrocarbons (PAHs) were investigated in the marine ecosystem of the Daya Bay, South China. The PAH concentrations ranged from 340 to 710 ng/g dry weight in the sediments and from 110 to 520 ng/g wet weight in marine organisms, respectively. The dominant compounds were three- and four-ring PAHs in the sediments (53%-89%) and two- and three-ring PAHs in the marine species (67%-94%), respectively. PAHs mainly originated from both pyrolytic and petrogenic sources. Comparison with the effects-based sediment quality guideline values suggested that the ecological risk caused by the total PAHs was relatively low (less than 25% incidence of adverse effects) in the sedimentary environment. The median cancer risk level via seafood consumption (1.6 × 10(-5) for urban residents and 1.2 × 10(-5) for rural residents, respectively) was slightly higher than the maximum admissible level (10(-5)) set by US EPA, but lower than the priority risk level (10(-4)).
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