Abstracts
The influence of the background concentration of CoCl2 on the selectivity of a Co(SCN) 2−4 -selective electrode based on QASs to thiocyanate is studied. The introduction of CoCl2 into a solution binds cobalt released from the membrane as thiocyanate complexes. A high selectivity of a Co(SCN) 2−4 -selective electrode to rhodanide ions is due to the formation of better extractable complexes between cobalt and SCN-compared to acido complexes of competitive ions. An introduction of 3.5 M CoCl2 into a solution enhances selectivity to SCN− by four orders of magnitude.
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Original Russian Text © E.M. Rakhman’ko, Yu.V. Matveichuk, L.S. Stanishevskii, V.V. Yasinetskii, 2014, published in Zhurnal Analiticheskoi Khimii, 2014, Vol. 69, No. 1, pp. 35–39.
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Rakhman’ko, E.M., Matveichuk, Y.V., Stanishevskii, L.S. et al. Influence of cobalt chloride concentration on the selectivity of a tetrathiocyanocobaltate-selective electrode to thiocyanate. J Anal Chem 69, 31–35 (2014). https://doi.org/10.1134/S1061934814010122
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DOI: https://doi.org/10.1134/S1061934814010122