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Dithizone method for determination of lead in monazite

Analytical Chemistry

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Abstract

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 m??. Rapid determinations were made with good reproducibility on a series of monazite samples.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Dithizone method for determination of lead in monazite
Series title:
Analytical Chemistry
Volume
30
Issue:
6
Year Published:
1958
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Analytical Chemistry
First page:
1139
Last page:
1141
Number of Pages:
3