Analysis of Amphibole Asbestos in Chrysotile-Containing Ores and a Manufactured Asbestos Product

摘要

Using a heating/acid/base digestion of chrysotile bulk materials and a chrysotile-containing product, provided a very sensitive (<0.0001%) analysis for amphibole asbestos fibers. The analysis showed the presence of amphibole fibers at concentrations below 1% in a sheet gasket and some bulk chrysotile from Black Lake, Quebec, Canada. No amphibole fibers were found in a sample of bulk Union Carbide Calidria chrysotile.