气体容量法和燃烧碘量法(以及中和法)测定钢铁中碳、硫是国内外普遍采用的分析方法。国内工厂实验室一般都采取碳、硫联测的方式。本文对此分析方法的容量分析部分的若干问题点进行了研究和探讨。一碘量法测硫的问题点 1 淀粉吸收液对SO_2的持留由于H_2SO_3不稳定,在通氧气的情况下,淀粉吸 Gas volumetric method and combustion iodine method (and neutralization method) for the determination of carbon and sulfur in steel is a commonly used analytical method at home and abroad. Domestic factory laboratories generally take carbon, sulfur joint test approach. In this paper, some problems in the capacity analysis of this method are studied and discussed. An iodine method to measure the sulfur problem Point 1 starch absorption liquid retention of SO2 H_2SO_3 instability in the case of oxygen, starch absorption