比浊法测定氢氧化钾中碳酸盐含量  

Turbidimetric Method for Carbonate Measuring in Potassium Hydroxide

作　　者：傅琼莲 

机构地区：[1]广州化学试剂厂,广东广州510288

出　　处：《广州化工》2013年第15期151-152,186,共3页GuangZhou Chemical Industry

摘　　要：对于高纯度氢氧化钾中低含量的杂质碳酸钾(K2CO3≤0.1%),目前还没有找到理想的分析测定方法。经过检测范围、精密度、回收试验等一系列的实验摸索验证,提出直接于试样中加氢氧化钡溶液,氢氧化钡和碳酸根生成碳酸钡沉淀,用目视比浊法测定。此方法简单、快捷、准确,回收率90%～100%。For low levels of impurity potassium carbonate （K2CO3≤0.1% ） in high purity potassium hydroxide, the ideal analysis method had not been found yet. After a series of experiments to explore verification, such as detection range, precision and recovery test, a turbidimetric method for potassium carbonate （ K2CO3≤0.1% ） measuring in potassium hydroxide was discussed, which made directly in the sample plus barium hydroxide solution. The method was simple, shortcut, accurate, and recovery was 90% - 100%.

关 键 词：氢氧化钾 碳酸盐 比浊法 快捷 

分 类 号：O652.1[理学—分析化学]