| Abstract: | A chemical method is presented for the determination of microgram amounts of zinc in rocks. Zinc is absorbed on anion-exchange resin from 1.2 M hydrochloric acid and eluted with 0.01 M hydrochloric acid. A diethyldithiocarbamate separation removes traces of interfering elements from the eluate. The zinc-diethyldithiocarbamate complex is extracted into chloroform at pH 8.5 and reextracted from other elements in the chloroform solution with 0.16 M hydrochloric acid and finally determined spectrophotometrically as the zincon complex at 621 m??. The coefficient of variation of the method determined from replicate determinations of zinc on 75 selected samples of basalt, ranging in zinc content from 0.004 to 0.018 per cent, was found to be 6.3 per cent and essentially constant in the range of zinc content studied. This method of analysis has been used extensively for a study of zinc in basalts reported by Rader, Swadley, Huffman and Lipp (companion paper, 1963). ?? 1963. |
| Genre: | Article |
| ProdID: | 70009999 |
| Citation Author: | Huffman, Jr. , C.; Lipp, H. H.; Rader, L. F. |
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| Citation End Page: | 215 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geochimica et Cosmochimica Acta |
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| Citation Number Of Pages: | 7 |
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| Citation Search Results Text: | Spectrophotometric determination of micro quantities of zinc in rocks; 1963; Article; Journal; Geochimica et Cosmochimica Acta; Huffman, Jr. , C.; Lipp, H. H.; Rader, L. F. |
| Citation Start Page: | 209 |
| Citation Volume: | 27 |
| Citation Year: | 1963 |
| Type: | citation/reference |
| Text: | Spectrophotometric determination of micro quantities of zinc in rocks; 1963; Article; Journal; Geochimica et Cosmochimica Acta; Huffman, Jr. , C.; Lipp, H. H.; Rader, L. F. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1963 00:00 -0600 |
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