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1 前言 H_2O_2的稳定性受温度、pH值及某些阴阳离子的影响。关于重金属离子对H_2O_2稳定性的影响,国外已有不少报导。有关Mg~(2+)、Ca~(2+)、Sr~(2+)、Zn~(2+)、Cd~(2+)等二价阳离子对H_2O_2稳定性的影响未见报导。本文对H_2O_2初始浓度为0.05mol·L~(-1)、pH值为11.0时,相同浓度的Mg~(2+)、Ca~(2+)、Sr~(2+)、Zn~(2+)、Cd~(2+)在不同温度下对H_2O_2稳定性的影响效力及同一温度下不同浓度5种阳离子对H_2O_2稳定性的影响效力作了对比研究。为印染业
1 Introduction The stability of H 2 O 2 is affected by temperature, pH and some anions and cations. About heavy metal ions on the stability of H_2O_2, there have been many reports abroad. The effects of Mg2 +, Ca2 +, Sr2 +, Zn2 + and Cd2 + on the stability of H2O2 have not been reported. In this paper, the effects of different concentrations of Mg2 +, Ca2 +, Sr2 + and Zn2 at the same concentration of 0.05 mol·L ~ (-1) H_2O_2 and pH value of 11.0 +), Cd ~ (2+) at different temperatures on the stability of H_2O_2 and the effects of five kinds of cations with different concentrations on the stability of H_2O_2 at the same temperature were compared. For the printing and dyeing industry