Consumer talcums and powders: Mineral and chemical characterization
作者:
A. N. Rohl,
A. M. Langer,
I. J. Selikoff,
A. Tordini,
R. Klimentidis,
D. R. Bowes,
D. L. Skinner,
期刊:
Journal of Toxicology and Environmental Health
(Taylor Available online 1976)
卷期:
Volume 2,
issue 2
页码: 255-284
ISSN:0098-4108
年代: 1976
DOI:10.1080/15287397609529432
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Representative consumer talcums and powders, including 20 body powders, baby powders, facial talcums, and also one pharmaceutical talc, were analyzed to determine their mineralogical and chemical composition. Where known, all were formulated prior to 1973. Of the 20 products 10 contained detectable amounts of tremolite and anthophyllite, principally asbestiform, while some also contained fragmented forms of these minerals. The amounts ranged from tenths of a percent to over 14% by weight; two contained detectable amounts of chrysotile asbestos fiber. Eight contained quartz, seven ranging from 2 to 5%, with one as high as 35%. The analyses showed that the consumer products examined were rarely the pure mineral talc, but rather were mixtures of various minerals; some samples consisted of three to five minerals, only one of which was talc. Other common mineral phases included chlorite, platy serpentine, pyrophyllite, mica, and carbonate minerals. Kaolin additive was identified in two products. The single pharmaceutical talc examined contained only a trace amount of quartz.
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