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研究了在乙醇介质中 Zn2 + 对过氧化氢氧化甲基红褪色反应的负催化作用 ,提出了测定痕量Zn2 +的新方法 ,通过实验确定了测定的最佳条件 .方法简单 ,灵敏度高 ,用于水样中痕量 Zn2 +的测定 ,结果满意 .
The negative catalytic effect of Zn2 + on the fading reaction of methyl red by hydrogen peroxide was studied in ethanol and a new method for the determination of trace Zn2 + was proposed.The optimum conditions were determined by experiments.The method is simple and has high sensitivity, For the determination of trace amounts of Zn2 + in water samples with satisfactory results.