State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Pearl River Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510380, China; University of Chinese Academy of Sciences, Beijing 100049, China.
State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
Mar Pollut Bull. 2020 Nov;160:111527. doi: 10.1016/j.marpolbul.2020.111527. Epub 2020 Sep 4.
The distribution and bioconcentration of polycyclic aromatic hydrocarbons (PAHs) in water, suspended particulate material (SPM), algae, and zooplankton samples from the Pearl River Delta (PRD), South China, were investigated. The PAHs in the water and SPM samples is significantly associated with chlorophyll a (Chl a), implying the important role of the aquatic productivity on PAH distribution. PAHs in the water or SPM samples were strongly correlated to dissolved organic carbon (DOC) or algal particulate organic carbon (A-POC). Moreover, the log bioconcentration factor (BCF) values (mL g) of PAHs in both the algae and zooplankton samples were linearly related to their log octanol-water coefficient (Kow) values. However, the slopes of these relationships were negatively correlated with Chl a, attributing to the difference in the dominant plankton species or the non-equilibrium exchange between air-water-biota. The above results indicate the important role of trophic levels on the distribution and bioaccumulation of PAHs.
本研究调查了中国南方珠江三角洲（PRD）的水、悬浮颗粒物（SPM）、藻类和浮游动物样本中多环芳烃（PAHs）的分布和生物浓缩情况。水和 SPM 样本中的 PAHs 与叶绿素 a（Chl a）显著相关，表明水生生产力对 PAH 分布具有重要作用。水或 SPM 样本中的 PAHs 与溶解有机碳（DOC）或藻类颗粒有机碳（A-POC）强烈相关。此外，藻类和浮游动物样本中 PAHs 的对数生物浓缩因子（BCF）值（mL g）与它们的对数辛醇-水系数（Kow）值呈线性关系。然而，这些关系的斜率与 Chl a 呈负相关，这归因于优势浮游生物种类的差异或空气-水-生物群之间的非平衡交换。上述结果表明营养水平对 PAHs 的分布和生物积累具有重要作用。
