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含硫有机化合物在竖式石英燃烧管中,于氧气流下经950℃高温燃烧分解,生成的二氧化硫(或三氧化硫)通过含双氧水的石英棉转化管,转化为硫酸。硫酸泵入电解池后,进行酸-碱库仑滴定。本法操作按时间程序控制进行,每次分析时间为15分钟,分析绝对误差为±0.5％对含磷的有机硫化合物及含钠、铁、铜、钼、镍、镧等金属的有机硫化合物,如在样品上复盖一层三氧化钨进行燃烧分解,也可获得满意的结果。
Sulfur-containing organic compounds are burned and decomposed in an upright quartz burner tube at a high temperature of 950 ° C under an oxygen stream. The generated sulfur dioxide (or sulfur trioxide) is converted into sulfuric acid through a quartz cotton conversion tube containing hydrogen peroxide. Sulfuric acid pumped into the cell after acid-base coulometric titration. The operation of this method is controlled by time program, with each analysis time being 15 minutes and the absolute error of analysis being ± 0.5%. For organosulfur compounds containing phosphorus and organic sulfur compounds containing metals such as sodium, iron, copper, molybdenum, nickel and lanthanum , Such as the sample covered with a layer of tungsten oxide combustion decomposition can also be satisfactory results.