Analytical Methods Evaluation and Validation: Arsenic, Nickel, Tungsten, Vanadium, Talc, Wood Dust

摘要

Methods for the sampling and analysis of arsenic (7440382) (As), nickel (7440020) (Ni), tungsten (7440337) (W), vanadium (7440622) (V), talc (14807966), and wood dust in the workplace were developed. As, Ni, W and samples were collected on a cellulose ester filter and analyzed by graphite furnace atomic absorption spectrophotometry (GFAAS) or flame atomic absorption spectrophotometry. Talc samples were collected on a polyvinyl-chloride filter and analyzed by X-ray diffraction. Wood dust samples were collected on glass fiber filters and were analyzed gravimetrically. The authors conclude that the methods for Ni, W, soluble V, and wood dust were fully validated and that validation for As, insoluble W, and talc are still pending further investigation.