邻菲罗啉对KBrO_3-Na_2SO_3-K_4[Fe(CN)_6]-H_2SO_4 pH振荡体系的扰动

Perturbations of phenanthroline on the KBrO_3-Na_2SO_3-K_4[Fe( CN)_6]-H_2SO_4 pH oscillating chemical system

本文研究了邻菲罗啉对KBrO3-Na2SO3-K4[Fe（CN）6]-H2SO4振荡体系的扰动。结果表明，当加入邻菲罗啉的浓度在0．0005～0．0035mol·L-1范围内时，导致KBrO3-Na2SO3-K4[Fe（CN）6]-H2SO4pH振荡体系的Pt电极电位、溴离子选择电极电位和 pH振荡的周期和振幅均明显放大，而加入邻菲罗啉的浓度在0．004～0．013mol·L-1范围内时，该体系的振幅缩小。另外，本文就邻菲罗啉对KBrO3-Na2SO3-K4[Fe（CN）6]-H2SO4pH振荡体系的影响机理进行了讨论。

The effect of phenanthroline on the KBrO3-Na2 SO3-K4 [ Fe（ CN） 6 ]-H2 SO4 pH oscillating chemical system was investiga-ted in this paper. The results indicated that the redox potential,the Br- selective electrode potential and pH oscillating amplitudes were amplified when the concentrations of phenanthroline in the range of 0. 0005-0. 0035mol·L-1 whereas concentrations of phenan-throline in the range of 0. 004-0. 013mol·L-1,redox potential,the Br- selective electrode potential and pH oscillating amplitudes were reduced. In addition,the possible mechanism of the perturbation was investigated.