An ion-selective electrode (ISE) with a plasticized membrane reversible to the ethylenediaminetetraacetic bismuthate (III) anion ([Bi(EDTA)]−) is described and a method for the direct potentiometric estimation of bismuth (III) in antacid formulations is presented. The active group of the ion exchanger for the [Bi(EDTA)]− anion-reversible ISE was the tridodecylmethylammonium cation.
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References
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 42, No. 10, pp. 54–56, October, 2008.
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Kharitonov, S.V., Kozyreva, Y.M. & Zarembo, V.I. Assay of bismuth in combined medicinal formulations using an ion-selective electrode. Pharm Chem J 42, 604–606 (2008). https://doi.org/10.1007/s11094-009-0177-3
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DOI: https://doi.org/10.1007/s11094-009-0177-3