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Science 13 April 1979:
Vol. 204. no. 4389, pp. 195 - 198
DOI: 10.1126/science.219478
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Articles

Science, Vol 204, Issue 4389, 195-198
Copyright © 1979 by American Association for the Advancement of Science

articles

Ingested mineral fibers: elimination in human urine

PM Cook and GF Olson

Sediment in human urine examined by transmission electron microscopy contains amphibole fibers which originate from the ingestion of drinking water contaminated with these mineral fibers. The ingestion of filtered water results in the eventual disappearance of amphibole fibers from urine. These observations provide the first direct evidence for the passage of mineral fibers through the human gastro-intestinal mucosa under normal conditions of the alimentary canal.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)