目前国内外测定钢铁中硫,大多采用燃烧—碘量法和燃烧—红外吸收法,虽然在工艺管理分析中简单、快速,但均需以标样为基准,且对测定微量硫而言,灵敏度也难以满足要求。当前为测定微量硫大多采用付品红光度法和灵敏度较高的次甲基蓝法、色层分离—重量法、X—射线荧光分析法等。这些方法虽然灵敏度能满足要求,但分析手续均较繁琐,需时冗长,且容易受到外界的 At present, the determination of sulfur in steel at home and abroad mostly uses combustion-iodometry and combustion-infrared absorption method. Although it is simple and rapid in process management analysis, it needs to be based on standard samples. For the determination of trace sulfur, the sensitivity It is difficult to meet the requirements. At present, most of the methods for the determination of trace sulfur are spectrophotometry and methylamine blue method with high sensitivity, chromatographic separation - gravimetric method and X-ray fluorescence analysis. Although these methods can meet the requirements of sensitivity, but the analysis procedures are more cumbersome, takes time-consuming and vulnerable to external