A method is described for the analysis of metals as found in industrial hygiene samples. Samples are ashed using nitric-acid to destroy the organic matrix and the metals are solubilized in an acidic solution maintaining a pH of 1. Samples and standards are aspirated into the appropriate atomic absorption flame. Data are given on the range and sensitivity, precision, accuracy, advantages and disadvantages of the method. Also described are the apparatus, reagents, and procedure used; analysis of samples; interferences; calibration and standards; and calculations. A data table is provided for the following metals; beryllium (7440417), calcium (7440702), cadmium (7440439), cobalt (7440484), chromium (7440473), copper (7440508), iron (7439896), potassium (7440235), magnesium (7439954), manganese (7439965), molybdenum (7439987), sodium (7440235), nickel (7440020), lead (7439921), tin (7440337), zinc (7440666), aluminum (7429905), lithium (7439932), palladium (7440053), silicon (7440213), silver (7440224), tellurium (10028167), thallium (7440280), barium (7440393), and arsenic (7440382). There is no reference to tungsten (7440337) in this paper.
NIOSH Manual of Analytical Methods, HEW Publication No. (NIOSH) 75-121, Cincinnati, US Dept. Health, Education and Welfare, Public Health, Service, Center for Disease Control, NIOSH