Chen Hualin, Chen Yingxu, Wang Zijian, Shen Mengwei, Xu Yuntai
Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.
Huan Jing Ke Xue. 2003 Sep;24(5):120-4.
The sorption/desorption behavior of phenanthrene in five aquatic sediments from Chinese southern rivers and lakes were studied using multiple cycles of sorption/desorption experiments. The results showed that the sorption of phenanthrene on sediments was proportional to the content of organic carbon and that there were irreversible sorption processes. When the total sorption was separated into reversible and irreversible fractions, reversible sorption of phenanthrene on sediments could be better predicted by its partitioning between water and organic carbon phase. It was concluded that the sediment organic carbon could be the essential factor that controlling the environmental behavior of polycyclic aromatic hydrocarbon in aquatic sediment under study and the ecological risk should associated also with the irreversibility of the sorption processes.
通过多轮吸附/解吸实验，研究了菲在中国南方河流和湖泊五种水生沉积物中的吸附/解吸行为。结果表明，菲在沉积物上的吸附与有机碳含量成正比，且存在不可逆吸附过程。当将总吸附量分为可逆和不可逆部分时，菲在沉积物上的可逆吸附可以通过其在水相和有机碳相之间的分配得到更好的预测。得出结论，沉积物有机碳可能是控制所研究水生沉积物中多环芳烃环境行为的关键因素，生态风险也应与吸附过程的不可逆性相关。
