A potentiometric sensor for the determination of diclofenac |
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Authors: | Zh. A. Kormosh I. P. Hunka Ya. R. Bazel |
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Affiliation: | (1) Lesya Ukrainka Volyn State University, pr. Voli 13, Lutsk, 43000, Ukraine;(2) Safarik University, Moyzesova 11, Kosice, 04001, Slovakia;(3) Uzhgorod State University, ul. Pidgirna 46, Uzhgorod, 88000, Ukraine |
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Abstract: | A diclofenacselective electrode with a plasticized poly(vinyl chloride) membrane containing an ion associate of diclofenac with Astrafloxin FF as an electrode-active substance was developed. The linearity range of the electrode function varied from 5 × 10?5 to 5 × 10?2 M; the slope of the electrode function was 59.0 ± 1.2 mV/pc, and the working pH range was 9–12. The effectiveness of the use of this electrode for monitoring diclofenac in pharmaceutical preparations was demonstrated. |
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