黄河(内蒙古段)水体中沉积物的表面特征  

SURFACE CHARACTERISTICS OF THE YELLOW RIVER’S SEDIMENT

作　　者：郝向英[1] 曹香蕊 赵慧[1] 郭博书[1] 

机构地区：[1]内蒙古师范大学化学与环境科学学院,呼和浩特010022 [2]核工业理化工程研究院,天津300180

出　　处：《环境化学》2007年第1期73-75,共3页Environmental Chemistry

摘　　要：运用表面络合原理,研究了内蒙古清水河县喇嘛湾黄河干流沉积物的表面特征.根据酸碱滴定求得沉积物的零电点pH(PZC),表面质子电荷密度σH及总吸附位NS,运用恒定容量模式求定了样品的表面固有酸度常数.研究表明,应用恒定容量模式研究天然水体沉积物的表面特征是可行的,在一定程度上能较好地吻合实验数据.The surface characteristics of the Lamawan sediment in the middle stream of the Yellow river in Inner Mongolia region is studied by the surface complexation approach. According to the point of zero charge pHPZC, the surface charge δHand the total adsorptive sites of the sample reached through potentiometric titration experiments, the surface intrinsic constant was obtained with constant capacitance model by the graphical. It shows that the constant capacitance mode can successfully fit the experimental data to some extent.

关 键 词：表面络合 沉积物 恒定容量模式 黄河. 

分 类 号：X131.2[环境科学与工程—环境科学]