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Dangerous chemical agents can induce more or less serious harmful effects (intoxication, occupational disease, death) on the body affected by their action, depending on the specific chemical-physical and toxicological properties, the way they are used and the dose absorbed.
The absorption phase of a chemical agent corresponds to the passage of the chemical from the external environment to the systemic circulation within an organism and may occur mainly through the respiratory tract, the skin and the gastrointestinal tract. (fig.1)
Fig.1: How are dangerous substances absorbed from the body?
In particular, the following classes of hazardous substances can be identified for the respiratory tract: dusts, fibres, fumes, vapours, gases, micro-organisms (viruses, bacteria, fungi and spores), aerosols, particulate matter and radioactive gases. (fig.2)
Fig.2: Which chemical agents do we breathe?
Photo by Chris Leboutillier on Unsplash
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