摘要
吸附分配系数一般用来定量描述污染物在自然水体中沉积物上的吸附行为。一些人在测定不同固体吸附剂浓度的分配系数时,发现随着固体吸附剂浓度的增加,分配系数值降低,对分配系数较大的变化较明显,分配系数较小的变化不明显,这可能是由于扩散到水相中的溶解有机碳和固体微粒等原因造成的。有些工作者对吸附分配系数和固体吸附剂浓度的关系进行了定量的描述。
Adsorption partition coefficients are commonly used to quantify the distribution of organic pollutants between the aqueous and particulate phase of natural aqneous system.Many authors found a significant increase in partitioning as solids concentration decrease.The solids effect is most pronounced for constituents characterized by large partitioning.The effect of solids concentration is less pronounced and the coefficient approaches a constant value for substances of low partitioning. It can be attributed to a transfer of sorbing,or solute-binding material from the solid phase to the liquid phase during the cou- rse of the partitioning and so on.Some authors put forward ex- perimental and theory model predictions to quantify the relati- onship between partition coefficients and solids concentration.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
1990年第1期79-84,共6页
Journal of Northeast Normal University(Natural Science Edition)
