摘要
黄河是世界河流中携带泥沙颗粒最多的河流。泥沙的沉积不仅受物理因素,也受化学因素的控制,例如受表面电荷的控制。研究黄河口水中悬浮体颗粒的表面电荷,有助于探求河口区域的悬浮物沉积规律。 本文测定了不同盐度下黄河口水体中悬浮粒子的电泳行为,得到如下结果:(1)所有悬浮粒子均带负电荷。(2)粒子Zeta电位的负值随盐度增大而减小。这个结果与文献报道(欧洲一些河流的)情况一致。
The Huanghe river is the greatest carrier of sand and clay particles among all the rivers in the world. The sedimentation process is controlled not only by physical factors, but also by chemical factors, such as surface charge. It is therefore of significance to study the surface charge of the suspended particles in the Huanghe river estuarine water for elucidating the rule of the participitation of suspended particles in estuarine region.In this paper we have determined the electrophoretic properties of the suspended particles in the Huanghe river estuarine water of different salinities. It is concluded that: 1 .All the particles are negatively charged, and 2. The altitute of the negative zeta potential decreases with increasing salinity.The data of the zeta potentials of the sediments in the Huanghe river estuarine region are reported.
基金
中国科学院科学基金
关键词
黄河口
泥沙颗粒
微电泳
表面电荷
悬浮粒子
Huanghe river estuarine
suspended particles
electrophoretic properties
