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Citation: Lu Hong, Han Degang, Lin Qiuzhu, Zheng Kexiang, Gao Zhidi. INVESTIGATION OF CHEMICAL OSCILLAITION BY THE METHOD OF CYCLIC VOLTAMMETRY[J]. Acta Physico-Chimica Sinica, ;1988, 4(01): 84-87. doi: 10.3866/PKU.WHXB19880117 shu

INVESTIGATION OF CHEMICAL OSCILLAITION BY THE METHOD OF CYCLIC VOLTAMMETRY

1.
Department of Chemistry; Peking University

Received Date: 22 August 1986
Available Online: 15 February 1988

Method of cyclic voltammetry for static systems has been modified through its recording system in order to apply it to follow the oscillating change of concentrations of some species in a chemical oscillation reaction. In this paper, oscillation of the concentration of bromide-ion in Melonic-acid-KBrO_2-H_2SO_4-MnSO_4 systems was followed by this modified method. It was found that, for systems investigated in this paper, the bromide-ion concentrations oscillate in the range of IO~(-4) mol dm~(-3) which is 1-2 orders of magnitude higher than that observed by the bromide-ion selective electrode. A frozen-titration method for bromide-ion was also used to check the result which was found to be in agreement with that of the modified method.
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