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Colloids in soil (can they "dry out")?

Question asked by Maxwell Taylor on Mar 31, 2014
Latest reply on May 15, 2014 by David Scheuing

Hi all, this a question from the realm of soil biogeochemistry. I was wondering about the colloidal fraction of soil, a hotspot area of chemical activity within soils.


I've often read about the colloidal fraction, basically it's the subset of the smallest mineral and organic soil particles (<0.001mm).


Is this particle set always suspended in a liquid?

If so what liquid?

If it's mostly water, can that liquid "dry out" and if so are those very small particles now no longer in a liquid and hence no longer a colloid?