摘要
本文采用过氧化氢-氯化钡-钍试剂法以及80%异丙醇-氯化钡-钍试剂法分别测定了烟气中的二氧化硫及三氧化硫质量浓度,并对该方法的灵敏度、准确度以及各种影响因素进行了研究分析.本方法简单、快速、准确、便于现场监测控制.
A method for the determination of sulfur dioxide and sulfur trioxide in stack gases is reported in this paper and optimum conditions have been discussed thoroughly. Sulfur dioxide is absorbed quantitatively in a solution of 3% hydrogen peroxide and sulfur trioxide absorbed guantitatively in 80% isopropyl alcohol solution,which inhibits oxidation of sulfur dioxide. Then the sulfate was titrated with standard barium chloride solution in 80% isopropyl alcohol using Thorin as indicator. The proposed method is simple and the titration is rapid. It is convenient to determine and control sulfur dioxide and sulfur trioxide insite.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
1994年第3期10-12,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
关键词
二氧化硫
三氧化硫
烟气
Sulfur dioxide Sulfur trioxide Stack gas
