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tate the skin on contact; some can be toxic by absorption through the skin or
through ingestion, and some are corrosive to living tissue.
The degree of worker risk from exposure to any given substance de-
pends on the nature and potency of the toxic effects and the magnitude and
duration of exposure.
10. Complete the classification and comment upon it. The phrase below
will help you.
Air contaminants can be divided into two groups. They are…
Particulate contaminants include…
Such factors as … form the group of…
Air Contaminants
particulate
dust welding gases
11. Read about biological hazards and write out:
• biological hazards;
• occupations which are exposed to biological hazards;
• methods preventing biological hazards.
BIOLOGICAL HAZARDS
These include bacteria, viruses, fungi, and other living organisms that
can cause acute and chronic infections by entering the body either directly or
through breaks in the skin. Occupations that deal with plants or animals or
their products or with food and food processing may expose workers to bio-
logical hazards. Laboratory and medical personnel also can be exposed to bi-
ological hazards. Any occupations that result in contact with bodily fluids
pose a risk to workers from biological hazards.
In occupations where animals are involved, biological hazards are dealt
with by preventing and controlling diseases in the animal population as well
as proper care and handling of infected animals. Also, effective personal hy-
giene, particularly proper attention to minor cuts and scratches, especially
those on the hands and forearms, helps keep worker risks to a minimum.
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