JOURNAL ARTICLE

Sources and ecological risk assessment of PAHs in surface sediments from Bohai Sea and northern part of the Yellow Sea, China

Jiafu Li, Han Dong, Dahai Zhang, Bin Han, Chenjian Zhu, Shaopeng Liu, Xiangmin Liu, Qianyao Ma, Xianguo Li
Marine Pollution Bulletin 2015 July 15, 96 (1-2): 485-90
25960274
Sources and ecological risk of sixteen priority PAHs in surface sediments from Bohai Sea (BS) and northern part of the Yellow Sea (NPYS) were investigated. The total concentrations of PAHs varied in ranges 149.24-1211.81 and 148.28-907.47 ng/g for BS and NPYS, respectively. Principal component analysis-multiple linear regression (PCA-MLR) suggested that coal combustion, vehicular emission and coke oven could be the primary PAH contributors, accounting for 56.6%, 29.2% and 14.2% of PAH concentrations, respectively. Analysis with sediment quality guidelines (SQGs) indicated that acenaphthylene, fluorene, phenanthrene, fluoranthene, pyrene and dibenzo(a,h)anthracene may occasionally cause adverse biological effects in some stations. Organic carbon (OC)-normalized analysis and mean effects range-median quotient (M-ERM-Q) suggested that the combined ecological risk of PAHs was generally low. The toxic equivalent concentrations of carcinogenic PAHs were 12.87-64.6 ng/g-BaP(eq) and 5.95-68.80 ng/g-BaP(eq) in BS and NPYS, respectively, suggesting low carcinogenic risk for both BS and NPYS.

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