| Abstract: | A neutron activation procedure suitable for the routine determination of tantalum and hafnium in silicates is described. The irradiated sample is fused with sodium peroxide and leached, and the insoluble hydroxides are dissolved in dilute hydrofluoric acid-hydrochloric acid. After LaF3 and AgCl scavenges, tantalum and hafnium are separated by anion exchange. Tantalum is obtained radiochemically pure; 233Pa and 95Zr contaminants in the hafnium fraction are resolved by ??-ray spectrometry. The chemical yield of the procedure is detemined after counting by re-irradiation. Values for the 8 U.S. Geological Survey standard rocks are reported. ?? 1968. |
| Genre: | Article |
| ProdID: | 70011531 |
| Citation Author: | Greenland, L. P. |
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| Citation End Page: | 370 |
| Citation Issue: | C |
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| Citation Language: | English |
| Citation Larger Work Title: | Analytica Chimica Acta |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Simultaneous determination of tantalum and hafnium in silicates by neutron activation analysis; 1968; Article; Journal; Analytica Chimica Acta; Greenland, L. P. |
| Citation Start Page: | 365 |
| Citation Volume: | 42 |
| Citation Year: | 1968 |
| Type: | citation/reference |
| Text: | Simultaneous determination of tantalum and hafnium in silicates by neutron activation analysis; 1968; Article; Journal; Analytica Chimica Acta; Greenland, L. P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1968 00:00 -0600 |
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