土壤胶体的表面性质受pH的影响,因此人们可假定悬液的稳定性也是如此。悬液的稳定性随土层深度的变化而变化,这种变化可用相对淌度或电泳淌度来测定,事实上它已被用来说明粘粒的移动、聚积、以及发育于不同气候条件下的土壤中各层次的分化。Buchanan和Oppenhein发现高岭土的电泳淌度随着表面Al的淋失而改变。二元氧化矿物如高岭土,其表面离子的解离受溶液 The surface properties of soil colloids are affected by pH, so one can assume that the stability of the suspension is also true. The stability of the suspension varies with the depth of the soil layer, and this change can be measured by either relative or electrophoretic mobility. In fact it has been used to account for the movement and accumulation of cosmids and to develop under different climatic conditions The levels of soil differentiation. Buchanan and Oppenhein found that the electrophoretic mobility of kaolin changed with the leaching of Al on the surface. Binary oxide minerals such as kaolin, whose surface ions are dissociated by solution