• Environmental
toxicology. A broad science
covering human toxicology
& ecotoxicology
• A toxicant is a poison and so Toxicology
is therefore the Science of Poisons.
• The route
of exposure of an individual to the toxicant depends on the physical
properties of the
chemical.
eg. all the following types of chemicals may be inhaled.
gases :
substances normally in the gas phase.
vapours
: gas formed from a solid or liquid.
dusts
: solid particles formed by grinding
fumes
: solid particles formed by condensation.
mists
: liquid droplets