Atomic Absorption Spectroscopic Determination of Lead Extracted from Acid-Solubilized Tissues
- 1 May 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of AOAC INTERNATIONAL
- Vol. 61 (3) , 660-663
- https://doi.org/10.1093/jaoac/61.3.660
Abstract
A method is presented for determining lead in a variety of tissues. Lyophilized samples are solubilized with nitric acid at room temperature in glass screw-cap culture tubes. Following neutralization with sodium hydroxide and sodium bicarbonate, the lead is extracted into methyl isobutyl ketone as the pyrrolidine dithiocarbamate complex and analyzed by flame atomic absorption spectrophotometry. Brain, heart, liver, lung, and spleen gave recoveries ranging from 92 to 102% with standard deviations of less than 8%. Aorta, kidney, and rib were unsuitable for analysis by this method. A large number of samples can be analyzed without specialized equipment or intricate experimental steps. The detection limit is 35 ng/g tissue (wet weight) and sensitivity is approximately 140 ng/g tissue (wet weight).This publication has 1 reference indexed in Scilit:
- Lead, Chromium, and Molybdenum by Atomic AbsorptionArchives of environmental health, 1966