Biologic monitoring of workers exposed to silver

The smelting and refining of silver and the preparation of silver salts for use in photosensitized products can lead to occupational exposures to silver. Our objectives in this study were to determine the absorption and elimination of silver by workers exposed to different species of silver, to esti...

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Bibliographic Details
Published inInternational archives of occupational and environmental health Vol. 56; no. 3; p. 207
Main Authors DiVincenzo, G D, Giordano, C J, Schriever, L S
Format Journal Article
LanguageEnglish
Published Germany 01.09.1985
Subjects
Absorption
Adult
Air Pollutants, Occupational - metabolism
Body Burden
Environmental Exposure
Environmental Monitoring
Feces - analysis
Hair - analysis
Humans
Male
Silver - metabolism
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Summary:The smelting and refining of silver and the preparation of silver salts for use in photosensitized products can lead to occupational exposures to silver. Our objectives in this study were to determine the absorption and elimination of silver by workers exposed to different species of silver, to estimate the body burden of silver and to relate these findings to the potential development of argyria. Workers potentially exposed to silver (n = 37) and a similar number of controls (n = 35) participated in this study. Blood, urine, feces and hair samples were collected and were analyzed for total silver content by atomic absorption spectroscopy. The mean concentration of silver in the blood, urine and feces of silver workers was 0.011 microgram/ml, less than 0.005 microgram/g and 15 microgram/g, respectively; and of controls was less than 0.005 microgram/ml, less than 0.005 microgram/g and 1.5 microgram/g, respectively. The concentration of silver in hair was markedly higher for the silver workers than for controls (130 +/- 160 vs 0.57 +/- 0.56 microgram/g, respectively). The importance of these latter findings was questionable since airborne particles of silver can bind to hair and lead to apparent high values. Since silver is eliminated predominantly in the feces, fecal measurements were used as an index of exposure and as a means of calculating body burdens. Human exposure to metallic silver at the TLV (0.1 mg/m3) is expected to lead to a fecal excretion of about 1 mg of silver per day.
ISSN:0340-0131
1432-1246
DOI:10.1007/bf00396598