| 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. ?? 1983. |
| Genre: | Article |
| ProdID: | 70011337 |
| Citation Author: | Welsch, E. P. |
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| Citation End Page: | 878 |
| Citation Issue: | 11 |
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| Citation Language: | English |
| Citation Larger Work Title: | Talanta |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | A rapid geochemical spectrophotometric determination of tungsten with dithiol; 1983; Article; Journal; Talanta; Welsch, E. P. |
| Citation Start Page: | 876 |
| Citation Volume: | 30 |
| Citation Year: | 1983 |
| Type: | citation/reference |
| Text: | A rapid geochemical spectrophotometric determination of tungsten with dithiol; 1983; Article; Journal; Talanta; Welsch, E. P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 1983 00:00 -0600 |
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