| The phenomena of non-equilibrium and non-linear has been widely in the nature, as one of which, the oscillating chemical reactions have become of great interest of scientific research gradually, because of their exotic behavior and unusual mechanisms. In particular, the research of classical oscillating chemical reactions and liquid membrane oscillations were not limited to pure theoretical studies any more, but used in the application of analytical determination. This work studied the kinetic determination of Indium ion and Cadmium ion based on the B-Z oscillating chemical system, and a kind of liquid membrane oscillating system.The main content includes four parts:Part I Oscillating chemical reactions and their application in the analytical chemistryThis literature review provides a brief introduction to the development of the oscillating chemical reactions. Some oscillating chemical reactions, theoretical model, thermodynamic parameters and their applications are described in detail. The perspective of oscillating chemical reactions is discussed.Part II Kinetic Determination of Indium Ion Based on the B-Z Oscillating Chemical System in Aqueous SolutionThe present paper deals with the application of cerium-catalyzed B-Z oscillating chemical system to the determination of indium ion in aqueous solution based on its linear perturbation on the oscillating period. Results showed that the change in the oscillating period is linearly proportional to the concentration of indium ion in the range from 4.98×10-7 to 3.85×10-6 M, with a correlation coefficient of 0.9984 and a detection limit of 4.96×10-7 M under the optimum conditions. Various influencing factors on the determination were also examined and the determination mechanism was discussed.Part III Kinetic Determination of Cadmium Ion by B-Z Oscillating Chemical System in Aqueous SolutionIn this investigation, a new analytical method for the determination of Cadmium ion in aqueous solution based on its perturbation on the B-Z oscillating chemical system was proposed. The method depends on the relationship between the change in the oscillating period of the reaction system and the concentration of cadmium ion in the range of 1×10-6 to 4.25×10-6 M, with a correlation coefficient of 0.9992 and a detection limit of 2.5×10-7 M under the optimum conditions. Various influencing factors on the determination were examined and the reaction mechanism was discussed.Part IV Electrical potential oscillation in an anionic surfactant system with barbitone in octanol as an oil phaseStudies were made on oscillations across a liquid membrane consisting of an oil layer, octanol containing barbitone, between two aqueous layers: that on the left containing 8 mM SDS with alcohol and that on the right containing 0.1M NaCl. The effects of various concentrations of chemical compounds in this system on the patterns of electrical oscillation were examined. The oscillations may be explained by the mechanism of repetitive formation and destruction of monolayer structures of the dodecyl sulfate anion at the interface between the organic and the aqueous phases, with the effect of proton penetration. The study in potential oscillation across the membrane containing a drug provides the possibility of further investigations in pharmacological activity.
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