Measurement of Hypoiodous Acid Concentration by a Novel Type Iodide Selective Electrode and a New Method To Prepare HOI. Monitoring HOI Levels in the Briggs-Rauscher Oscillatory Reaction

Muntean, N [Muntean, Norbert (Kémia), szerző]; Thuy, LB [Lawson Bich, Thuy (Fizika), szerző] Fizika Tanszék (BME / TTK / FI); Kaly-Kullai, K [Kály-Kullai, Kristóf (Fizikai), szerző] Fizika Tanszék (BME / TTK / FI); Wittmann, M [Gyökérné Wittmann, Mária (Fizikai kémia), szerző] Fizika Tanszék (BME / TTK / FI); Noszticzius, Z [Noszticzius, Zoltán (Fizikai kémia), szerző] Fizika Tanszék (BME / TTK / FI); Onel, L; Furrow, SD

Angol nyelvű Szakcikk (Folyóiratcikk) Tudományos
Megjelent: JOURNAL OF PHYSICAL CHEMISTRY A 1089-5639 1520-5215 116 (25) pp. 6630-6642 2012
  • SJR Scopus - Medicine (miscellaneous): D1
Azonosítók
Szakterületek:
  • Fizika
A new type of iodide selective electrode prepared by dipping a silver wire into molten silver iodide is reported. The electrode was calibrated for silver and iodide ions and the measured electromotive force for various Ag+ and I- concentrations was close to the theoretical within a few millivolts. Besides Ag+ and I- ions, however, the electrode also responds to hypoiodous acid. Thus, the electrode was calibrated for HOT as well, and for that purpose a new method of hypoiodous acid preparation was developed. To explain the close to Nemstian electrode response for HOI and also the effect of hydrogen ion and iodine concentration on that response, the corrosion potential theory suggested earlier by Noszticzius et al. was modified and developed further. Following oscillations in the Briggs-Rauscher reaction with the new electrode the potential crosses the "solubility limit potential" (SLP) of silver iodide. Potentials below SLP are controlled by the concentration of I-, but potentials above SLP are corrosion potentials determined by the concentration of HOI. Finally, the measured HOI oscillations are compared with calculated ones simulated by a model by Furrow et al.
Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
2025-01-05 01:57