A simple reliable method for the determination of airborne hexavalent chromium.
Am Ind Hyg Assoc J 1974 Apr; 35(4):229-233
A method is presented for the determination of airborne hexavalent- chromium (7440473) concentrations. Samples collected on polyvinyl- chloride (9002862) membrane filters are easily washed clean with acid allowing a colorimetric determination with a dimethylcarbazide solution (against a potassium-bichromate (7778509) standard) up to 2 weeks following the initial sampling. The polyvinyl-chloride filter allows a test that is specific for hexavalent-chromium, a condition that permits evaluating compliance with the OSHA standard for that substance.
NIOSH-Author; Air-quality-measurement; Dust-sampling; Sampling-techniques; Filter-materials; Trace-metals; Analytical-methods; Polyvinyl-plastics; Microanalysis; Polymers
7440-47-3; 9002-86-2; 7778-50-9
American Industrial Hygiene Association Journal