过氧化氢氧化的锑白溶液中SbⅢ,SbⅤ和过氧化氢的测定  

Determination of antimonyⅢ,antimonyⅤ and hydrogen peroxide in the oxidized antimony white solution by hydrogen peroxide

作　　者：古映莹[1] 李丹[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《冶金分析》2006年第4期20-23,共4页Metallurgical Analysis

摘　　要：报道了在盐酸介质中测定用过氧化氢氧化锑白的溶液中Sb（Ⅲ），Sb（Ⅴ）和过氧化氢的分析方法。利用H2O2既具有还原性又具有氧化性这一特殊性质，用硫酸铈滴定法测定溶液中H2O2和Sb（Ⅲ）的总量，用碘量法测定溶液中H2O2和Sb（Ⅲ）的差量，用硫酸铈滴定法在近沸温度下测定溶液中的总Sb量，最后计算得出H2O2，Sb（Ⅲ）和Sb（Ⅴ）的量。讨论了滴定温度、H2O2／Sb（Ⅲ）含量的比值并口NaHCO3用量对测定结果的影响。方法用于过氧化氢氧化的锑白溶液中Sb（Ⅲ），Sb（Ⅴ）和过氧化氢的测定，相对标准偏差分别为0．25％，0．28％和0．38％；回收率分别为100．6％～102．5％，97．5％～99．5％和98．6％～99．1％。An analytical method for determining hydrogen peroxide, Sb（Ⅲ） and Sb（Ⅴ） was introduced in the oxidized antimony white solution by hydrogen peroxide. According to the double especial property of H2O2, this method can be divided into three parts. First, the total amounts of hydrogen peroxide and Sb（Ⅲ） was determined by ceriometry.Second, the difference of hydrogen peroxide and Sb（Ⅲ） was determined by iodometry.Third,the total amounts of antimony was also determined by ceriometry at the nearly boiling temperature. At last, the concentrations of hydrogen peroxide, Sb（Ⅲ） and Sb（Ⅴ） were calculated by the formulas. The influences of titration temperature, ratio of H2O2/Sb（Ⅲ） and the dosage of NaHCO3. on analytical results were discussed. The method has been applied for the determination of Sb（Ⅲ）, Sb（Ⅴ） and H2O2 in the oxidized antimony white solution by hydrogen peroxide, and the relative standard deviations were 0.25 %, 0.28 % , 0.38 % and the recoveries were 100.6% - 102.5%, 97.5% - 99.5%, 98.6% - 99.1%, respectively.

关 键 词：H2O2 Sb(Ⅲ) Sb(Ⅴ) 硫酸铈滴定法 碘量法 

分 类 号：O655.23[理学—分析化学]