Topic
Potassium iodate
About: Potassium iodate is a research topic. Over the lifetime, 611 publications have been published within this topic receiving 5940 citations. The topic is also known as: KIO3.
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TL;DR: In this article, the selectivity of the membrane electrode for a given type of ions at variable concentrations of other components, with particular attention to the influence of the initial concentrations of the various acids on the shift of the iodide selective electrode potential, taking into account the redox reactions between these components in an oscillatory system.
Abstract: In the potassium iodate-hydrogen peroxide-cysteine-sulfuric acid system, the authors studied the selectivity of the membrane electrode for a given type of ions at variable concentrations of other components, with particular attention to the influence of the initial concentrations of the various acids on the shift of the iodide selective electrode potential, taking into account the redox reactions between these components in an oscillatory system.
TL;DR: In this article, the authors carried out bifurcation analysis of its mathematical model and determined the criteria for the appearance and size of the limit cycle in the phase space of the concentrations of the basic variables of the system.
Abstract: In order to determine the sufficient conditions for realization of oscillatory instability and the stages responsible for destabilization of the reaction regime in the potassium iodate-hydrogen peroxide-cysteine-sulfuric acid system, we have carried out bifurcation analysis of its mathematical model. We have determined the criteria for the appearance and size of the limit cycle in the phase space of the concentrations of the basic variables of the system; we have established the number and type of stability of the stationary states.
TL;DR: KIO3を含むHNo3溶液からのSio2あるいはAl203へのPu (IV) の吸着挙動を検討した。
Abstract: KIO3を含むHNo3溶液からのSio2あるいはAl203へのPu (IV) の吸着挙動を検討した。分配比, D (ml/g) はKIO3濃度とともに増大し, HNO3濃度とともに減少する。KIO3濃度によるDの変化に基づいて, Pu (IV) とI03-との錯体の安定度定数を計算し, その結果から最も妥当なPu (IV) の吸着機序はSiO2あるいはAl2O【d3】へのPu (IO3) 4の見かけ上の追沈殿ではなく, 正に帯電したSiO2あるいはAl2O3とPu (IO3) 62-陰イオンの相互作用によって起こると結論した。
TL;DR: In this paper, an inhibitory kinetic-fluorimetric method was proposed for trace aniline determination based on the inhibitory effect of anilines on the oxidation of rhodamine B by potassium iodate in hydrochloric acid.
Abstract: A novel inhibitory kinetic-fluorimetric method is reported for the determination of trace aniline. The method is based on the inhibitory effect of aniline on the oxidation of rhodamine B by potassium iodate in hydrochloric acid. The detection limit for aniline is 0.872 ng/mL; the linear range of determination is 4.10∼41.0 ng/mL. Every parameter has been optimized. Some ions which seriously interfere with the determination can be removed by means of pre-distillation in basic condition. The proposed method is simple, rapid and reliable. It has been applied to the determination of trace aniline in waste and tap waters.
01 Jul 2013
TL;DR: In this article, the authors investigated the kinetics and mechanism of oxidation of lactose by potassium iodate in the presence of Ir(III) chloride as homogeneous catalyst in aqueous alkaline medium.
Abstract: The kinetics and mechanism of oxidation of lactose by potassium iodate in the presence of Ir(III) chloride as homogeneous catalyst in aqueous alkaline medium has been investigated. The reaction is found to be first order with respect to sugar, iodate and hydroxyl ions at their low concentrations (sugar from 1.00×10 -2 to 3.00×10 -2 M , iodate from 2.50×10 -4 to 15.00×10 -4 M and hydroxyl ions from 8.00×10 -2 to 24.00×10 -2 M) and zero order with respect to sugar, iodate and hydroxyl ions at their high concentrations (sugar from 3.50×10 -2 to 10.00×10 -2 M, iodate from 17.50×10 -4 to 25.00×10 -4 M and hydroxyl ions from 32.00×10 -2 to 80.00×10 -2 M). Rate of oxidation is directly proportional to [Ir(III)] throughout its variation. Ionic strength of the medium and [Cl – ] have no effect on the rate of oxidation. From the values of observed rate constants at four different temperatures, the activation parameters have been calculated. Lyxonic acid, arabinonic acid and formic acid have been identified as the main oxidation products of the reaction. The results are in accord with the proposed mechanism in which the most reactive activated complex, [C6H11O9I.IrCl3(H2O)2] 2- in the rate determining step, decomposes into an intermediate, which finally forms the products through fast steps with regeneration of the effective species of catalyst.