Pavlovska, Gorica and Čundeva, Katarina and Stafilov, Trajche (2001) Determination of Thallium Traces from Aqueous Solutions Using Iron(III) Hexamethylenedithiocarbamate as a Flotation Collector and Subsequent Electrothermal Atomic Absorption Spectrometry. Croatica Chemica Acta, 74 (1). pp. 121-134. ISSN 131782
Full text not available from this repository.Abstract
Hexamethyleneammonium hexamethylenedithiocarbamate (HMA-HMDTC) was used as a new flotation reagent for enrichment and separation of thallium traces from aqueous Solutions. HMA-HMDTC added to the first precipitate collector of hydrated iron(III) oxide (Fe2O3 ⋅ xH2O) gives the second precipitate collector of iron(III) hexamethylenedithiocarbamate (Fe(HMDTC)3). During the coprecipitation step, thallium ions are incorporated in the structure of the collector particles forming a sublate, which is separated from the processed water phase by flotation. After the preconcentration and separation step, a quantitative analysis is performed by electrothermal atomic absorption spectrometry (ETAAS). The diverse experimental parameters affecting the flotation efficiency were determined and optimized. It was ascertained by a proposed procedure that total thallium can be separated quantitatively by addition of 10 mg FeIII and 3 mL 0.1 mol/L HMDTC- to the sample at pH = 6.0. The applicability of the proposed new procedure has been verified by the analysis of natural water samples by the method of standard additions and by inductively coupled plasma - atomic emission spectrometry (ICP-AES), as an independent comparative method. The limit of detection for thallium in this method is 0.024 μg/L.
| 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 > Environmental engineering 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: | 03 Apr 2023 12:33 |
| Last Modified: | 03 Apr 2023 12:33 |
| URI: | https://eprints.uklo.edu.mk/id/eprint/7923 |
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