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以银电极为指示电极 ,Ag+ 标准溶液为滴定剂 ,对BrO-3、IO-3单种离子及BrO-3与IO-3的混合离子进行了测定。结果表明 :BrO-3或IO-3单种离子 ,测定误差小于 1 % ;BrO-3与IO-3混合离子 ,IO-3的测定误差约为 1 % ,但BrO-3的测定误差较大。此外 ,对BrO-3、IO-3与Ag+ 沉淀反应的动力学行为进行了研究 ,并对产生误差的原因进行了讨论。
The Ag + standard solution was titrated with silver electrode as the indicator electrode. The mixed ions of BrO-3, IO-3, BrO-3 and IO-3 were determined. The results show that the determination error of BrO-3 or IO-3 is less than 1%, the error of determination of BrO-3 and IO-3 mixed ions and IO-3 is about 1% . In addition, the kinetic behavior of the precipitation reaction of BrO-3, IO-3 and Ag + was studied, and the reasons for the error were discussed.