|
**Due to
their relatively small particle size, gaseous pollutants are extremely
difficult to remove from indoor air. The most common types of
absorption filters - activated carbon (charcoal filters) or aluminum
oxide (alumina), remove only a limited amount of pollutant gases. Once
fully absorbed, the filter can even re-release gases back into the
air. Larger absorption type filters are generally more effective
but less practical except in extreme cases where an individual is
overly sensitive. Eliminating the source of the pollutant
and use of a balanced ventilation system are the two most effective
ways to deal with indoor gas pollutants.
|