II CHEMICAL EXPOSURE. A.- Solids e.g.: dust, fumes, smoke, smog. B.- Liquids and vapors including mists and fogs. C.- Gases. Dusts are particular matter in a state of minute division arising from processes like grinding, crushing, blasting and drilling.
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Organic dusts Plant origin such as ….. Animal origin………
Inorganic dusts such as……..
Organic lead can penetrate the unbroken and normal skin rapidly to enter the body
2:Lead colic arising from processes like grinding, crushing, blasting and drilling.:
It occurs in approximately 80% of cases and it may be severe to stimulate acute appendicitis. A very important point in differential diagnosis is that relief is often obtained by making firm pressure upon the abdomen..
There is tendency towards localization of lead palsy in overused and fatigued muscles and that the distribution of paralysis is related to functional groupings of muscles rather than to their nerve supply.
Usually the conditions start by a sensation of heaviness in the limbs especially in the morning then proceed to weakness of the affect muscles, which become fatigued readily and prematurely.
The paralysis usually begins in the extensor muscles of the fingers, at first in the right hand of the right-handed persons.
The condition is almost always bilateral although it may begin at first on one side and appear on the other side after a few days or weeks. Paralysis of hand and foot muscles may result in wrist drop and foot drop, however, this is rare nowadays.
Joints fingers, at first in the right hand of the right-handed persons. : arthralgia
Genital System :Abortion in pregnant females. Legislation forbidden the employment of women in occupations involving a lead hazard.
More accurate and specific than coproporphyrine.
Mozatil or penicillamine