Everything about Sol Colloid totally explained
A
sol is a
colloidal
suspension of
solid particles (1-500
nanometres in size) in a
liquid. Examples include
blood, pigmented
ink, and
paint.
Artificial sols may be prepared by dispersion or condensation. Dispersion techniques include grinding solids to colloidal dimensions in a
ball mill (dry or wet) and
Beidig's arc method. Condensation or precipitation methods work by making the colloidal particle come out of solution into the colloidal phase, either by adding a precipitating agent (salt) or by changing the temperature. The stability of sols may be maintained by using dispersing agents.
Sols are commonly used in preparing
sol-gels. Sols may be a component of
total dissolved solids, since the particle size is small enough to pass through a two
micrometre filter.
Further Information
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