沉积物对菲和五氯酚的吸附性能

研究了菲和五氯酚（PCP）在五种沉积物的吸附解吸行为，菲和PCP在各沉积物上的吸附和解吸都是较快的过程。均能在8h内达到平衡，吸附和解吸结果表明，高有机质含量的沉积物对菲和PCP的吸附和持留能力都较强，菲和PCP在各沉积物中的吸附系数跟沉积物的有机质含量呈线性正相关。等温吸附结果表明，低有机质含量的三种沉积物比有机质含量较高的两种沉积物呈更好的线性关系。不同沉积物对菲和PCP的吸附性能差异跟沉积物的有机质含量密切相关。

SORPTION PROPERTIES OF PHENANTHRENE AND PENTACHLOROPHENOL (PCP) TO SEDIMENTS

It was introduced that phenanthrene and pentachlorophenol (PCP) were sorbed onto the five sediments. The results showed that both sorption and desorption of phenanthrene and PCP on five sediments can reach equilibrium in less than 8 hours. The sorption capacity of sediment is significantly dependent on orga-nic matters content of sediment; and sediments with high content organic matters had high capacity of sorption and resistant desorption. The sorption coefficients of phenanthrene and PCP on sediments were proportional to the organic matters content of sediments. The sorption isotherms of phenanthrene and PCP on the sediments in Taihu lake, Yongjiang river, Qiantang river and Dianchi lake can be described with linear equation, while the sediment in West lake can't.