碱式硫酸铝溶液中SO_4^(2-)的测定  

Detection of SO_4^(2-) in Basic Aluminum Sulfate Solution

作　　者：乔斌[1] 温高[1] 张子敬[1] 张宏[1] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051

出　　处：《化工环保》2013年第1期87-90,共4页Environmental Protection of Chemical Industry

摘　　要：建立了以铬黑T为指示剂,乙二胺四乙酸二钠反滴定过量BaCl2的碱式硫酸铝溶液中SO42-的测定方法。实验确定的操作条件为:待测试样稀释后ρ(SO42-)为0.025～0.100 g/L,BaCl2过量率为25%～100%,并且在加入BaCl2前将试样煮沸,三乙醇胺加入量为0.10 L/L。该法回收率在98.90%～100.72%,相对标准偏差小于1%。测定方法准确,可靠,且操作简便、快速。The method for detection of SO4^2- in basic aluminum sulfate solution was established by EDTA back-titration of excess BaCL2 and using eriochrome black T as indicator. The operation conditions determined by experiments are as follows： p（SO2-） of the diluted sample 0.025-0.100 g/L, BaCl2 excessive ratio 25%-100%, adding BaCl2 into boiling sample, triethanolamine dosage 0.10 L/L. This detection method is accurate, reliable, simple and rapid with 98.90%-100.72% of recovery rate and less than 1% of relative standard deviation.

关 键 词：碱式硫酸铝 脱硫 硫酸根 测定方法 

分 类 号：X132[环境科学与工程—环境科学]