摘要
用碘量法测定稳定性二氧化氯溶液中的二氧化氯 (ClO2 )含量时 ,当稳定剂中过氧水合碳酸钠过量时 ,测定结果会偏高。如采用将待测样酸化后加入略过量的K2 Cr2 O7与其中的H2 O2 反应 ,从而消除其影响 ,再用碘量法测定 ,就可较准确地测定稳定性二氧化氯溶液中ClO2 的真实含量。
The content of ClO 2 in a stabilized chlorine dioxide solution, determined by iodometric method, always deviates to be higher if peroxo-hydrous sudium carbonate is excessive. However, a few excessive potassium bichromate added into the acidated specimen reacts with hydrogen peroxide and dispel the negative effect of peroxohydrous sodium carbonate. Thus the exact content of ClO 2 can be determined.
出处
《大连轻工业学院学报》
2001年第1期22-23,共2页
Journal of Dalian Institute of Light Industry
关键词
二氧化氯
稳定性溶液
碘量法测定
chlorine dioxide
stabilized solution
iodometric method
