A potentiometric metformin-sensitive detector with a plasticized polyvinyl chloride membrane has been developed. The sensor contains an ion associate of metformin with bromophenol blue dye. The response is linear within the range of metformin ion concentrations 1 × 10–-4–1 × 10–-1 M. The slope of the electrode function is characteristic of a singly charged cation. The limit of detection is 8 × 10–-5 M. The sensor can be used for detecting and determining metformin in medicines (RSD = 0.59 – 2.52%).
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 56, No. 8, pp. 59 – 62, August, 2022.
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Kormosh, Z., Kormosh, N., Golub, S. et al. New Potentiometric Sensor for Determination of Metformin. Pharm Chem J 56, 1140–1143 (2022). https://doi.org/10.1007/s11094-022-02765-1
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DOI: https://doi.org/10.1007/s11094-022-02765-1