Abstract
The organic content of commercially milled Canadian chrysotile was found to range from 0.5 to 20.0 mg per 100 gm, depending on the source and grade of fiber. These yields exceeded those from field specimens in all cases except one, and indicated contamination by mining and milling processes. An elemental analysis showed the organic extracts to contain carbon (81.94 to 86.03%), hydrogen (11.47 to 13.14%), and minor amounts of other elements. Infrared and gas chromatographic examination confirmed n-alkanes to be the major constituents. The concentration of polycyclic aromatic hydrocarbons in milled fiber was considered too low to play an important role in carcinogenesis. The importance and sources of n-alkanes and total organic contamination are discussed.
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