%0 Journal Article
%T Nonlinear Sorption Behaviors of Chlorobenzenes on Sediments<br>氯苯类化合物在沉积物上的非线性吸附行为
%A SHU Yue-hong
%A HUANG Xiao-ren
%A JIA Xiao-shan
%A <br>舒月红
%A 黄小仁
%A 贾晓珊
%J 环境科学
%D 2009
%I 
%X Sorption isotherms of chlorobenzene, 1,4-dichlorobenzene, 1,2,4-trichlorobenzene and 1,2,4,5-tetrachlorobenzene on 5 sediments were examined to understand its sorption behavior. All systems examined exhibits nonlinear sorption. All sorption isotherms are nonlinear as evidenced by the Freundlich n values of 5 sediments being between 0.858 to 0.956. Sorption nonlinearity is found to be a function of the polarity index of sediments natural organic matter(NOM) with a high correlative coefficient of 0.994 7, suggesting that the degree of condensation of NOM, characterized by its polarity index, is correlated with the sorption behavior of 1,2,4-trichlorobenzene. In addition, the sorption affinity Koc) of the sediments for 1,2,4-trichlorobenzene increases with decreasing of NOM polar, indicating that a higher sorption affinity in the sediments is associated with a higher degree of condensation of NOM. The Freundlich n values of chlorobenzene, 1,4-dichlorobenzene, 1,2,4-trichlorobenzene and 1,2,4,5-tetrachlorobenzene are 0.755, 0.788, 0.858, 0.949 respectively, indicating that the smaller CBs molecule may result in more significant sorption nonlinearity.
%K 氯苯类化合物(CBs)
%K 沉积物
%K 非线性
%K 吸附
%K 极性指数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=71D50F7E3A4500784C7842633DF4C8C6&yid=DE12191FBD62783C&vid=340AC2BF8E7AB4FD&iid=CA4FD0336C81A37A&sid=4609832E4B5C797B&eid=DD74772618543076&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=28