A rapid geochemical spectrophotometric determination of tungsten with dithiol
Talanta
By: E. P. Welsch
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Abstract
1-g sample is decomposed with nitric and hydrofluoric acids, and after evaporation of the solution to dryness the residue is dissolved in concentrated hydrochloric acid. A clear aliquot is treated with stannous chloride to inhibit interferences. The blue tungsten dithiol complex is developed at a temperature of 85° over a half-hour period. The complex is extracted into 2 ml of heptane and the tungsten is determined spectrophotometrically with a sensitivity of 0.5 ppm. Fifty samples per man-day can be analysed in this manner.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A rapid geochemical spectrophotometric determination of tungsten with dithiol |
| Series title | Talanta |
| DOI | 10.1016/0039-9140(83)80203-3 |
| Volume | 30 |
| Issue | 11 |
| Year Published | 1983 |
| Language | English |
| Publisher | Elsevier |
| Description | 3 p. |
| First page | 876 |
| Last page | 878 |