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An aerosol is a collection
of microscopic particles,
solid or liquid, suspended
in a gas.
In the context of air
pollution, an aersol
refers to fine particulate
matter, that is
larger than a molecule,
but small enough to
remain suspended in
the atmosphere
for at least several
hours.
The term aerosol is
also commonly used for
a pressurized container
(aerosol can) which
is designed to release
a fine spray of a material
such as paint. It has
also come to be associated,
erroneously, with the
gas (propellant) used
to expel materials from
an aerosol can. |
