Hu Jing, Liu Wen X, Chen Jiang L, Fan Yong S, Xing Bao S, Kang Ho, Tao Shu
Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2008 Mar;43(4):382-9. doi: 10.1080/10934520701795582.
Spatial distribution, composition and possible source of 10 parent polycyclic aromatic hydrocarbons (PAHs) in littoral surface sediments from the Yellow Sea were investigated. The total PAHs concentrations varied from 12.4 to 8294.0 mug/kg dry weights, and the sites with the highest levels were all located in Dalian Bay. At most sampling sites, PAH components with moderate and high molecular weights were dominant, while percentage of low molecular weight species was higher at a few sites close to several harbor cities. The specific ratios of paired PAH isomeric compounds for source apportionment suggested that various pyrolytic procedures were the major origin in the Yellow Sea, whereas petrogenic cause only occurred at a small number of the monitoring sites. The averaged effect rang low (ERL) quotient for the studied PAH components was generally below the threshold value of 1.0 in most sea areas, indicated that the potential ecological risks of PAHs contamination in surface sediments were normally not high in the Yellow Sea, however, the situation in Dalian Bay should be cautioned due to the high mean ERL quotient.
对黄海沿岸表层沉积物中10种母体多环芳烃（PAHs）的空间分布、组成及可能来源进行了研究。总PAHs浓度在12.4至8294.0微克/千克干重之间变化，含量最高的位点均位于大连湾。在大多数采样位点，中高分子量的PAH组分占主导，而在靠近几个港口城市的少数位点，低分子量物种的百分比更高。用于源解析的成对PAH异构体化合物的特定比值表明，各种热解过程是黄海的主要来源，而成岩成因仅在少数监测位点出现。研究的PAH组分的平均效应范围低值（ERL）商在大多数海域通常低于阈值1.0，表明黄海表层沉积物中PAHs污染的潜在生态风险通常不高，然而，由于平均ERL商较高，大连湾的情况应予以关注。
