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研究了无光照条件下焦性没食子酸 -KBrO3-H2 SO4 体系振荡的基本规律 ,得到了2 5℃、35℃时起振时间τ、振荡周期T与各反应物起始浓度之间关系的经验方程 .以主波长为2 53.7nm的紫外灯为光源 ,研究了不同紫外光强度下该体系的振荡规律并给出了 2 5℃、照度为50 0Lx时τ、T与各反应物起始浓度之间关系的经验方程 .根据实验结果 ,对溴离子控制与非溴离子控制问题及紫外光在振荡过程中的作用机理进行了初步的探讨 .
The basic law of oscillation of pyrogallol-KBrO3-H2SO4 system in the absence of light was studied and the empirical equation of the relationship between the onset time τ, oscillation period T and the initial concentration of each reactant at 25 ℃ and 35 ℃ was obtained. The oscillation law of the system at different UV intensity was studied by using UV light with wavelength of 53.7nm as light source and the relationship between τ, T and initial concentration of each reactant at 25 ℃ and illumination intensity of 50 0Lx Empirical equation of the relationship between the bromide ion control and non-bromide ion control problems and the role of UV light in the oscillation process were discussed.