Spectrophotometric determination of micro quantities of zinc in rocks |
| |
| Affiliation: | 1. Post Graduate Department of Chemistry, Jagdish Chandra DAV College, Dasuya, Punjab 144205, India;2. Post Graduate Department of Chemistry, DAV College, Jalandhar, Punjab 144008, India;1. School of Physics and Electronics, Central South University, Changsha, Hunan 410083, PR China;2. School of Automation, Central South University, Changsha, Hunan 410083, PR China;3. School of Information Engineering, Shaoyang University, Shaoyang, Hunan 422000, PR China;1. School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China;2. Department of Chemical Engineering, Queen''s University, Kingston K7L 3N6, ON, Canada |
| |
| 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 mμ.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). |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
