硫化物分析较普遍采用的是硫酸钡重量法和碘量法。前者多用于硫化物常量分析,后者常用作土壤、水质及金属材料中微量硫化物的测定。在介绍碘量法的文献中,资料是将样品分解释放出的硫化氢气体,与锌盐作用生成沉淀,加酸溶解后,以碘酸钾溶液直接滴定;资料是用氨性镉盐溶液吸收,加过量碘标准溶液后再酸化,最后用硫代硫酸钠溶液滴定;更多的资料是介绍用乙酸锌溶液作吸收液。但这些方法对测定含硫较高(如1％以上)的硫化物试料就不甚适宜。硫酸钡重量法虽然准确可靠,但 Sulfide analysis is more commonly used barium sulfate gravimetric method and iodometric method. The former is often used for sulfide constants analysis, the latter is often used as soil, water quality and metal materials in the determination of trace sulfides. In the introduction of iodometric method in the literature, the sample is decomposed to release hydrogen sulfide gas, and the role of zinc salt to form a precipitate, add acid dissolved, potassium titrate solution titration; data is absorbed with ammonia cadmium salt solution , Add excess iodine standard solution and then acidified, and finally with sodium thiosulfate solution titration; more information is introduced with zinc acetate solution as absorbent. However, these methods are not suitable for the determination of sulfide samples with high sulfur content (such as more than 1%). Although barium sulfate gravimetric method is accurate and reliable,