colloid
colloid
1. A substance that is composed of two homogenous phases, one of which is dispersed in the other.
2. (pedol.) Soil colloids are substances of very small particle size, either mineral (e.g. clay) or organic (e.g. humus), which therefore have a large surface area per unit volume. Colloids usually provide surfaces with high cation exchange capacity, and also exhibit an instability controlled by soil chemistry.
1. A substance that is composed of two homogenous phases, one of which is dispersed in the other.
2. (pedol.) Soil colloids are substances of very small particle size, either mineral (e.g. clay) or organic (e.g. humus), which therefore have a large surface area per unit volume. Colloids usually provide surfaces with high cation exchange capacity, and also exhibit an instability controlled by soil chemistry.
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colloid
