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CH3041
TOXICOLOGY
• 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