摘要
对敌百虫和甲拌磷在黄河水体沉积物中的吸附特性进行了研究,观察了ｐＨ值和离子强度等因素对吸附的影响．结果表明,敌百虫的吸附过程为一级动力学规律;敌百虫的吸附符合Ｌａｎｇｍｕｉｒ等温式,甲拌磷的吸附可用Ｆｒｅｕｎｄｉｃｈ等温式较好地描述．ｐｈ值降低或离子强度增加使敌百虫和甲拌磷在沉积物中的吸附程度明显减小．敌百虫在黄河水体沉积物中的吸附以表面吸附为主,而甲拌磷则表现为表面吸附和在有机碳中的分配作用两种吸附方式．
A study on the adsorption of trichlorphon and phorate on Yellow river's sediments was per-formed . It was investigated that the influence of some factors, such as pH value and ionic strength on the adsorption. First order kinetics mode for the adsorption of trichlorphon shown. Langmuir isotherm was suggested as the most appropriate type for trichlorphon, and Freundlich isotherm for phorate. Both adsorption and partition occur to the sorption of phorate to Yellow river's sediments, but adsorption is the predominant for that of trichlorphon.
出处
《环境化学》
CAS
CSCD
北大核心
2001年第3期244-248,共5页
Environmental Chemistry
