Solvent extraction procedures combined with back-extraction for trace metal determinations by atomic absorption spectrometry |
| |
| Authors: | Bertil Magnusson Stig Westerlund |
| |
| Affiliation: | Department of Analytical and Marine Chemistry, Chalmers University of Technology and University of Göteborg, S-412 96 GöteborgSweden |
| |
| Abstract: | Metal dithiocarbamate extractions with three different organic solvents (chloroform, freon and 4-methylpentan-2-one) followed by back-extraction with nitric acid are described. The back-extraction is studied in detail and simple rapid procedures are described for each solvent. The dilute nitric acid solution obtained is suitable for use with both flame and electrothermal atomic absorption spectrometry. Quantitative recoveries were obtained for Cd, Cu, Fe, Ni, Pb and Zn. Cobalt could be rapidly back-extracted only from chloroform and freon. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
