Direct Determination of Cadmium, Nickel, and Zinc in Rat Lungs

Abstract
An atomic absorption method for the direct determination of metals in mammalian tissues has been developed. The procedure, which involves digestion of the sample with a quaternary ammonium hydroxide, allows one to measure metals normally present in low concentrations, such as cadmium and nickel, with a great degree of sensitivity and a minimal amount of sample handling.