Spectrophotometric determination of tungsten in rocks by using zinc-dithiol
Journal of Research of the U.S. Geological Survey
By: Philip Aruscavage and Esma Campbell
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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.
| 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 |