Pavlovska, Gorica and Čundeva, Katarina and Stafilov, Trajche and Zendelovska, Dragica (2003) Flotation Method for Selective Separation of Silver, Cadmium, Chromium, Manganese, Thallium, and Zinc from Aragonite Before Atomic Absorption Spectrometric Determination. Separation Science and Technology, 38 (5). pp. 1111-1124. ISSN https://doi.org/10.1081/SS-120018126
Full text not available from this repository.Abstract
Selective separation of impurities contained in aragonite (CaCO3) before their determination by atomic absorption spectrometry (AAS) was performed by the method of flotation. At proper selected pH, Ag, Cd, Cr, Mn, Tl, and Zn present in an aqueous solution of aragonite, unless Ca, were incorporated in the mass of the collector mixture consisting of hydrated iron(III) oxide, Fe2O3·xH2O, and iron(III) hexamethylenedithiocarbamate, Fe(HMDTC)3. By addition of surfactant, the collector precipitate was separated from liquid phase by air bubbles. After dissolving, the analytes were tested by, atomic absorption spectrometry (AAS). To ascertain optimal concentration of aragonite solution suitable for flotation, preliminary tests were performed. Flotation suppression because of the reaction among calcium and surfactant ions was very possible, and therefore, the most appropriate foaming reagent was selected. The detection limit of AAS method following flotation was found to be 0.024 μg g−1 for Ag, 0.019 μg g−1 for Cd, 0.016 μg g−1 for Cr, and 0.117 μg g−1 for Tl, determined by electrothermal atomic absorption spectrometry (ETAAS), and 1.596 μg g−1 for Mn and 0.792 μg g−1 for Zn, determined by flame AAS.
| Item Type: | Article |
|---|---|
| Subjects: | Scientific Fields (Frascati) > Engineering and Technology > Chemical engineering Scientific Fields (Frascati) > Natural sciences > Chemical sciences Scientific Fields (Frascati) > Engineering and Technology > Other engineering and technologies |
| Divisions: | Faculty of Technology and Technical Sciences |
| Depositing User: | Prof. d-r. Gorica Pavlovska |
| Date Deposited: | 04 Apr 2023 08:40 |
| Last Modified: | 04 Apr 2023 08:40 |
| URI: | https://eprints.uklo.edu.mk/id/eprint/7939 |
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