Distribution, Source, and Ecological Risk Assessment of Polycyclic Aromatic Hydrocarbons in Surface Sediment of Liaodong Bay, Northeast China

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Xu, Shuang^1 ; Tao, Ping^1 ; Li, Yuxia^1 ; Guo, Qi^1 ; Zhang, Yan^1 ; Wang, Man^1 ; Jia, Hongliang^1 ; Shao, Mihua^1

Dalian Maritime University, Liaoning Province Dalian, China^1

关键词: Concentration levels;    Diagnostic ratios;    Ecological risk assessment;    Liaodong Bay;    Polycyclic aromatic hydrocarbons (PAHS);    Quality guidelines;    Source;    Surface sediments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012156/pdf
DOI  :  10.1088/1757-899X/301/1/012156

来源: IOP

【 摘 要 】

Sixteen polycyclic aromatic hydrocarbons (PAHs) were determined in surface sediments from Liaodong Bay, northeast China. The concentration levels of total PAHs (Σ16PAHs) in sediment were 11.0∼249.6 ng•g-1 dry weight (dw), with a mean value of 89.9 ng•g-1 dry weight (dw). From the point of the spatial distribution, high PAHs levels were found in the western areas of Liaodong Bay. In the paper, sources of PAHs were investigated by diagnostic ratios, which indicated that pyrogenic sources were the main sources of PAHs in the sediment of Liaodong Bay. Therefore, selected PAH levels in sediments were compared with Sediments Quality Guidelines (ERM-ERL indexes) for evaluation probable toxic effects on marine organism.