Selective photometric redox determination of periodate and iodate ions in bottled drinking water
- Authors: Nayanova E.V.1, Sergeev G.M.1, Elipasheva E.V.1
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Affiliations:
- Department of Chemistry
- Issue: Vol 71, No 3 (2016)
- Pages: 248-252
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/181539
- DOI: https://doi.org/10.1134/S1061934816030096
- ID: 181539
Cite item
Abstract
method has been developed for the selective photometric redox determination of periodate and iodate ions in bottled drinking water based on redox reactions of analytes with Methylene Blue with different duration of processes, products of which form the analytical signal. The limits of detection for periodate and iodate ions are 0.5 and 0.2 µg/L, respectively. The allowable weight ratios for concomitant ions for (at the analyte concentration 2 µg/L) are as follows: I–, Br–, IO3–, BrO3–, ClO–, CIO–, CIO2–, CIO3– and CIO4–(1: 100); and for IO3– (1 µg/L) are: BrO3–2–, NO (1: 60), CIO–, CIO2–, (1: 100), and I–, Br–, IO4–, CIO3–, and CIO4– (1: 200). The HCIO3–, Cl–, and SO42- anions and Ca2+, Mg2+, Na+, K2+, and NH4+ cations are macrocomponents of drinking water and at total concentrations up to 10 g/L do not affect the results of analysis. In the concentration range 1–10 µg/L of IO4– andIO3–, the total error of determination is 5–7%.
About the authors
E. V. Nayanova
Department of Chemistry
Email: GenMich@rambler.ru
Russian Federation, pr. Gagarina 23, Nizhny Novgorod, 603950
G. M. Sergeev
Department of Chemistry
Author for correspondence.
Email: GenMich@rambler.ru
Russian Federation, pr. Gagarina 23, Nizhny Novgorod, 603950
E. V. Elipasheva
Department of Chemistry
Email: GenMich@rambler.ru
Russian Federation, pr. Gagarina 23, Nizhny Novgorod, 603950
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