Dithizone method for determination of lead in monazite
In the determination of lead in monazite-to be used as the basis for geologic age measurements-it was necessary to eliminate interferences due to the presence of phosphates of thorium and the rare earth metals. The method involves attacking the monazite samples with hot, concentrated sulfuric acid, then taking them up with dilute nitric acid. Lead is extracted as the dithizonate and determined spectrophotometrically at 520 mµ. Rapid determinations were made with good reproducibility on a series of monazite samples.
Citation Information
Publication Year | 1958 |
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Title | Dithizone method for determination of lead in monazite |
DOI | 10.1021/ac60138a043 |
Authors | R. A. Powell, C. A. Kinser |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Analytical Chemistry |
Index ID | 70010562 |
Record Source | USGS Publications Warehouse |