Abstract
Iodide ion selective poly(aniline) solid contact electrode based on quinine-Cu ionophore as a sensing material has been successfully developed. The electrode exhibits good linear response of 52.0 mV/decade (at 20 ± 0.2°C, r 2 = 0.9998) within the concentration range of 1 × 10−6.4–1 × 10−1.0 M KI. The composition of this electrode was quinine-Cu 2.0: PVC 30.0: bis(2-ethylhexyl)sebacate 68.0 (mass). This plasticizer provides the best response characteristics. The electrode shows good selectivity for iodide ion in comparison with any other anions and is suitable for use with aqueous solutions of pH 3.3–9.4. The standard deviations of the measured EMF difference were ±1.4 and ±1.3 mV for iodide sample solutions of 1.0 × 10−2 M and 1.0 × 10−3 M, respectively. The stabilization time was less than 10 min and response time was less than 15 sec.
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Han, WS., Lee, YH., Lee, SN. et al. Iodide ion selective poly(aniline) solid contact electrode based on quinine-cu ionophores. J Anal Chem 66, 854–858 (2011). https://doi.org/10.1134/S106193481109019X
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DOI: https://doi.org/10.1134/S106193481109019X