粘土表面、聚合物链上的化学基、胶体和其它的材料上都有清楚的带负电区域或离子。
Clay surfaces, groups on polymer chains, colloids and other materials have distinct, negatively charged areas or ions.
胶体微粒可很容易地放入悬浮体中，但从悬浮体中沉降的速度慢于粘土颗粒大小的物质。
Colloids are easily put in suspension but settle out of suspension slower than clay-sized material.
从胶体化学的角度阐明游离氧化铁在红粘土中的赋存状态，指出它们之间的相互作用机理是胶体化学吸附作用；
The paper illuminates the existing state of free iron oxide in red clay in the view of collochemistry, pointing out the interaction mechanism between them is the adsorption of collochemistry;
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