EDTA络合滴定代替重量法测定SO_3——用络合滴定法测定SO_3含量探讨

Using EDTA Chelatometry to Determine SO_3 Instead of Gravimetric Determination——On Measuring the Content of SO_3 by Using Complexometric Titration

水泥中的SO3含量,是国家检测水泥质量的重要指标之一。用重量法测定,时间长、操作难度大,而采用EDTA络合滴定法测定水泥中SO3含量,时间短、方法简便、易操作。通过实验对比,测定数据可靠,符合水泥生产工艺的要求。

SO_3 in cement is one of the important indexes in determining the quality of cement in a country. By using gravimetric determination, it takes a long time and difficult to operate. While EDTA complexometric titration takes a short time, whose methods are simple and easy to operate. Compared in laboratory, data measured are credible and meet the requirements of cement production.