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Determination of cadmium and zinc in waters by flame atomic absorption spectrometry after cloud-point extraction |
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| Authors: | R. Sh. Shemshadi N. A. Zeinalov A. A. Efendiev M. S. Arvand T. N. Shakhtakhtinskii |
| Affiliation: | 1. Academician Nagiev Institute of Chemical Problems, National Academy of Sciences of Azerbaijan, pr. G. Dzhavida 29, Baku, AZ1143, Azerbaijan 2. Faculty of Science, Department of Chemistry, Guilan University, Guilan, P.O. Box 1914, Iran |
| Abstract: | Phase separation of nonionic surfactants in aqueous solutions was used to extract cadmium and zinc. After complexation with 6-(4-nitrophenyl)-2,4-diphenyl-3,5-diazabicyclo[3.1.0]hexene-2 (pH 1), cadmium and zinc were quantitatively transferred into the phase rich with the nonionic surfactant octylphenoxypolyethoxyethanol. After the addition of tetrahydrofuran and HCl to the extract, the elements were determined by flame atomic absorption spectrometry. |
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