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本文报导了测定有机物中微量硫的极谱法。该法基于在氧气瓶中燃烧生成硫酸盐,然后在盐酸中,使其与过量的重铬酸钡反应,随即调节PH至12,收集铬酸钡和硫酸钡混合沉淀,并以极谱法测定游离的铬酸根(相当于初始存在的硫酸根量)。
This paper reports the polarographic determination of trace sulfur in organic matter. The method is based on the combustion of oxygen in a vial to generate sulfate and then in hydrochloric acid to react with an excess of barium dichromate. The pH is then adjusted to 12 and the mixed precipitate of barium chromate and barium sulfate is collected and determined by polarography Free chromate (equivalent to the initial amount of sulfate present).