Spectrophotometric determination of tungsten in rocks by using zinc-dithiol

Journal of Research of the U.S. Geological Survey
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Abstract

Tungsten is determined in 11 USGS standard rocks by a spectrophotometric procedure that measures the absorbance of the tungsten-dithiol complex. The results are compared with those obtained by other methods. After the samples are dissolved in HClO4 and HF, the tungsten-dithiol complex is extracted into isoamyl acetate and then back-extracted into isoamyl acetate. The determination of 0.1 part per million in a 500-mg sample can be made routinely. 

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Spectrophotometric determination of tungsten in rocks by using zinc-dithiol
Series title Journal of Research of the U.S. Geological Survey
Volume 6
Issue 6
Year Published 1978
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description 3 p.
First page 697
Last page 699
Online Only (Y/N) N
Additional Online Files (Y/N) N
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