OSHA Method ID-215: Hexavalent Chromium in Workplace Atmospheres
Description
This method describes the sample collection and analysis of airborne hexavalent chromium, Cr(VI). This method should be used by industrial hygienists experienced in monitoring for exposures and analysts experienced in the use of ion chromatography and the interpretation of ion chromatograms. Samples are taken in the breathing zone of workplace personnel, and analysis is performed with an ion chromatograph (IC) equipped with a UV-vis detector and a postcolumn reagent delivery system. Hexavalent chromium most commonly exists in the workplace as a metal (M) chromate (MCrO4), such as lead chromate, or also as chromium trioxide (CrO3). Common interferences noted in past methods, such as Cr(III) and Fe(II) are kept to a minimum.
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