Edouard Bastarache on fri 25 feb 00
To potters,
a few quotes on lead skin penetration in the industrial setting:
1-"Inorganic lead is not absorbed through intact skin,
but organic lead compounds(tetraethyl lead,tetramethyl lead)
can be".
Reference:"Hazardous Materials Toxicology, page 834 by
Sullivan & Krieger, last edition.
2-"Lead (Inorganic compounds),
Exposure: Inhalation, ingestion".
"Lead arsenate
Exposure: Inhalation. ingestion"
"Lead chromate:
Exposure: Inhalation"
Reference:Chemical Hazards of the Workplace, pages 371-377 by
Proctor & Hughes, last edition.
3-"Inorganic lead is absorbed into the human organism by the
respiratory and gastrointestinal routes.The former is more
important in occupational exposure, whereas the latter predominates
in other exposures. Cutaneous absorption of inorganic lead is
negligeable"
Reference:Occupational Medicine,page 512 by Carl Zenz, last edition.
4-"Skin absorbtion of inorganic lead is weak as compared to
tetraethyl lead(organic). Lead naphtenate(organic), as in industrial
oils and greases, may penetrate via the skin( Hine & al;Van Peterghem
& de Vos). In the rat lead acetate may be absorbed by the skin in the
same amounts as lead naphtenate(Rastogi & Clausen)
(.....)
Inhalation of dust and fume containing lead is still the major route of
excessive exposure in the professional setting"
Reference: Toxicologie Industrielle et Intoxications Professionnelles
by Lauwerys, page 257, last edition.
Later,
Edouard Bastarache
Dans / In "La Belle Province"
edouardb@sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/~edouardb/
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