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- E-ISSN 2288-8985
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Ion-Selective Electrodes for the Determination of Alverine
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1995, v.8 no.1, pp.79-84
Lee,
E., Kim,
K., Kim,
S., Hur,
M., &
Ahn,
M.
(1995). Ion-Selective Electrodes for the Determination of Alverine. Analytical Science and Technology, 8(1), 79-84.
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Abstract
Ion-selective poly(vinyl chloride) membrane electrodes for the determination of the anticholinergic drug alverine in pure substances is described. Ion-pair complex of alverine with anionic counter ion acid red 97 is investigated as electroactive compound for the electrode membrane. On the optimal composition of membrane, its slope was 55.35mV/decade, relative standard deviation was 0.61 and lower limit of linear range was <TEX>$1.0{\times}10^{-5}M$</TEX>. The observed potentiometric selectivity coefficient was -2.625 toward methylephedrine and -2.216 toward histidine. We can got the stable potential at pH 7.0~4.0. Response time was 20~30 seconds for solutions<TEX>${\leq}10^{-4}M$</TEX>, about 10 seconds for solutions <TEX>${\geq}10^{-4}M$</TEX> of these compounds.
- keywords
- Ion-selective electrode, anionic counter ion, acid red 97, alverine
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