摘要
研究用ＥＤＴＡ容量法测定碱式硫酸铝溶液中的硫酸根含量。介绍了方法原理，探索了分析程序、试剂和指示剂加量及各种干扰因素的影响。方法的平均偏差为０．７２ｇ／Ｌ，平均相对偏差为０．４２％，且重现性好，与以往采用有毒试剂的盐酸联苯胺法相比，相对偏差仅为０．３０％，。测定手续简便，滴定终点清晰，操作时间短，可满足工业生产测定要求。
EDTA volumetrical method for the determination of SO42- in basic aluminum sulphate solution was studied with respects to analysis procedure, addition amount of reagents and indicator, and interferential factors. The average deviation is 0. 72g/L and average relative deviation is 0. 42% with a good repeatability. The method has a relative deviation of 0. 3%compared to the conventional method using benzidine hydrochloride, a poisonous reagent, so is accurate enough to replace it.
出处
《硫酸工业》
CAS
1995年第6期25-31,共7页
Sulphuric Acid Industry
