CAJ | 학술논문

为了建立定量描述土壤中多氯联苯(PCBs)迁移规律的数学模型,以采自现代黄河三角洲地区的土壤为研究对象,针对类二噁英类多氯联苯PCB81及阻转类多氯联苯PCB95在土壤中的吸附行为进行了研究,获得了其吸附等温方程并分析了土壤有机质含量、颗粒组成、pH、矿物质含量等特性参数对吸附量的影响.结果表明,PCBs在土壤中的吸附行为符合Langmuir吸附等温方程;PCBs的吸附量与土壤中有机质含量和土壤粘粒含量呈正相关关系,与土壤pH值及土壤矿物质含量无明显相关关系.
위료건립정량묘술토양중다록련분(PCBs)천이규률적수학모형,이채자현대황하삼각주지구적토양위연구대상,침대류이오영류다록련분PCB81급조전류다록련분PCB95재토양중적흡부행위진행료연구,획득료기흡부등온방정병분석료토양유궤질함량、과립조성、pH、광물질함량등특성삼수대흡부량적영향.결과표명,PCBs재토양중적흡부행위부합Langmuir흡부등온방정;PCBs적흡부량여토양중유궤질함량화토양점립함량정정상관관계,여토양pH치급토양광물질함량무명현상관관계.
The adsorption of polychlorinated biphenyls (PCBs) in soils and the factors that influenced the process were studied. Adsorption experiments of 2 PCBs(PCB81,95)were performed on soil samples taken from the Yellow River delta. The adsorption isotherm data could be described by the Langmuir equation. The adsorption process was influenced by several properties of the soils: a positive correlation was found between the PCBs adsorbing quantities (Cs) and the organic matter content of the soils; the clay content of soils had promotion effects on Cs during the process; no evident effects were found between Cs and pH;Cs on soil minerals was magnitude smaller than those on virgin soil, indicating that soil minerals had no direct influence on adsorption