CAJ | 학술논문

采用某地区土壤样品,利用批实验的方法,研究不同有机碳含量的土壤样品对三氯乙烯(TCE) 的吸附行为.研究表明,土壤样品中,由于有机碳含量不同,有机污染物三氯乙烯(TEC)的吸附量不同,存在有机碳含量的阈值区间(f_∝~*).最小f_∝~*=0.702%,最大f_∝~*=1.831%,当f_∝<0.702%时,TCE吸附量随土壤样品的有机碳含量变化较小,基本不随f_∝变化而发生较大变化;在0.702%1.831%时,TCE吸附量随土壤样品的有机碳含量变化又变得平缓,基本上又不随f_∝升高而发生较大的变化.
채용모지구토양양품,이용비실험적방법,연구불동유궤탄함량적토양양품대삼록을희(TCE) 적흡부행위.연구표명,토양양품중,유우유궤탄함량불동,유궤오염물삼록을희(TEC)적흡부량불동,존재유궤탄함량적역치구간(f_∝~*).최소f_∝~*=0.702%,최대f_∝~*=1.831%,당f_∝<0.702%시,TCE흡부량수토양양품적유궤탄함량변화교소,기본불수f_∝변화이발생교대변화;재0.702%1.831%시,TCE흡부량수토양양품적유궤탄함량변화우변득평완,기본상우불수f_∝승고이발생교대적변화.
The adsorption of organic contaminants in soil is one of the most important factors affecting the migration and transformation process of these organic contaminants. Using batch experiments, this paper studied the adsorption behaviors of Trichloroethylene (TCE) in soil samples with different contents of organic carbon. The results indicate that the adsorption capacity is significantly correlated with different contents of organic carbon. There exist critical threshold values (f_∝~*) of organic carbon contents. The minimum f_∝~* and the maximum f_∝~* are equal to 0.702% and 1.831%, respectively. The TCE adsorption capacity does not vary greatly with the increasing of organic carbon contents when f_∝ is lower than 0.702% . Nevertheless, the TCE adsorption capacity varies considerably with the increasing of organic carbon contents when 0.702%<f_∝<1.831%. When f_∝ is higher than 1.831%, the TCE adsorption capacity does not vary remarkably again with the increasing of organic carbon contents.