Li Haiyan, Lu Lei, Huang Wen, Yang Juan, Ran Yong
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 511 Kehuajie, Tianhe, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China.
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 511 Kehuajie, Tianhe, Guangzhou 510640, China.
Mar Pollut Bull. 2014 Jun 15;83(1):306-16. doi: 10.1016/j.marpolbul.2014.04.036. Epub 2014 May 10.
The partitioning and bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) in water, suspended particulate matter (SPM), and fish samples from the Dongjiang River (DR), Pearl River (PR), and the Pearl River Estuary (PRE) were examined. Although PAHs are much lower in PRE than in DR or PR, PAHs in some fish species are significantly higher in PRE than in DR or PR. Aqueous or particulate PAHs respectively show significant correlations with dissolved organic carbon, particulate organic matter, and chlorophyll a, suggesting that biological pumping effect regulates their distribution. The in situ partitioning coefficients (logKoc) for PAHs are one order magnitude higher than the empirical logKoc-logKow correlation. The bioconcentration factor (BCF) is slightly higher for the marine fish than for the freshwater fish. The above phenomena indicate that BCF may vary due to the diversity of fish species, feeding habits, and metabolism of PAHs in fish.
对东江（DR）、珠江（PR）和珠江口（PRE）水体、悬浮颗粒物（SPM）及鱼类样本中多环芳烃（PAHs）的分配和生物累积情况进行了研究。尽管珠江口的多环芳烃含量远低于东江或珠江，但某些鱼类体内的多环芳烃含量在珠江口却显著高于东江或珠江。水体或颗粒态多环芳烃分别与溶解有机碳、颗粒有机物及叶绿素a呈现显著相关性，这表明生物泵效应调节着它们的分布。多环芳烃的原位分配系数（logKoc）比经验性的logKoc-logKow相关性高一个数量级。海水鱼的生物富集因子（BCF）略高于淡水鱼。上述现象表明，生物富集因子可能因鱼类种类、食性及鱼类体内多环芳烃代谢的多样性而有所不同。
