Analysis of Thorium in Thorotrast Patient's Organs. Colorimetric Determinaiton with Arsenazo III.
- 1 January 1992
- journal article
- Published by Japan Health Physics Society in Japanese Journal of Health Physics
- Vol. 27 (3) , 223-226
- https://doi.org/10.5453/jhps.27.223
Abstract
The formerly used X-ray contrast medium, Thorotrast—a colloidal thorium dioxide—causes a chronic exposure to α-particles. In this paper, a method for the colorimetric determination of thorium content in Thorotrast patient's organs is described. The sequential chemical separation of thorium has been studied on the basis of coprecipitation, ion exchange, and solvent extraction methods, followed by colonmetric analysis using Arsenazo III.The experimental values were compared with those obtained by radiation measurement or neutron activation analysis of patient's organs.Keywords
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