Determination of thorium by fluorescent x-ray spectrometry
Analytical Chemistry
By: I. Adler and J. M. Axelrod
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Abstract
A fluorescent x-ray spectrographic method for the determination of thoria in rock samples uses thallium as an internal standard. Measurements are made with a two-channel spectrometer equipped with quartz (d = 1.817 A.) analyzing crystals. Particle-size effects are minimized by grinding the sample components with a mixture of silicon carbide and aluminum and then briquetting. Analyses of 17 samples showed that for the 16 samples containing over 0.7% thoria the average error, based on chemical results, is 4.7% and the maximum error, 9.5%. Because of limitations of instrumentation, 0.2% thoria is considered the lower limit of detection. An analysis can be made in about an hour.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Determination of thorium by fluorescent x-ray spectrometry |
| Series title | Analytical Chemistry |
| Volume | 27 |
| Issue | 6 |
| Year Published | 1955 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Analytical Chemistry |
| First page | 1002 |
| Last page | 1003 |