The thoron-tartaric acid systems for the spectrophotometric determination of thorium
Trace Elements Investigations
571
By: F. S. Grimaldi and Mary H. Fletcher
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Abstract
Thoron is popularly used for the spectrophotometric determination of thorium. An undesirable feature of its use is the high sensitivity of the reagent toward zirconium. This study describes the use of tartaric acid as a masking reagent for zirconium. Three tartaric acid-thoron systems, developed for the determination of thorium, differ with respect to the concentrations of thoron and tartaric acid. Mesotataric acid, used in one of the systems, is found to be most effective in masking zirconium. The behavior of various rarer elements, usually found associated with thorium ores, is determined in two of the systems, and a dilution method is described for the direct determination of thorium in monazite concentrates.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | The thoron-tartaric acid systems for the spectrophotometric determination of thorium |
| Series title | Trace Elements Investigations |
| Series number | 571 |
| DOI | 10.3133/tei571 |
| Year Published | 1955 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Washington D.C. |
| Description | 25 p. |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |