Determination of thorium and uranium in total diet samples by inductively coupled plasma mass spectrometry
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Analytical Atomic Spectrometry
- Vol. 6 (4) , 335-338
- https://doi.org/10.1039/ja9910600335
Abstract
The Th and U contents in total diet samples were determined by inductively coupled plasma mass spectrometry (ICP-MS). The internal standardization method was adopted to compensate for non-spectral interferences arising from matrix elements in the sample solutions. Concentration levels of the order of pg ml–1 of Th and U in the total diet sample were determined easily and rapidly by using Bi as an internal standard. The mean concentrations and standard deviations of Th and U in the total diet samples were found to be 25 ± 12 and 44 ± 20 ng g–1 of ash, respectively (for n= 62).Keywords
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