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本法以艾氏剂熔样,(保留原熔样方法)以水萃取熔渣,为了消除 Na~-离子干扰,滤液必需控制钠离子与硫酸根离子的限界比值,在 PH=3～4的乙醇——水介质中,以 Thorin 为指示剂.用 BaCl_2标准溶液滴定,测定煤或焦炭中全硫分的含量本法与艾氏法对比.除了准确度和精密度相同之外.同时可免去重量法中两次分离沉淀和多次称量手续,生产效率较艾氏法提高50～60%左右。
In this method, the alginite is melted, and the original melted sample is retained to extract the molten slag by water. In order to eliminate the interference of Na ~ - ions, the filtrate must control the limiting ratio of sodium ions to sulfate ions. At pH = 3-4 Ethanol - aqueous medium, with Thorin as an indicator Titration with BaCl 2 standard solution to determine the content of total sulfur in coal or coke This method is compared with the Ehrlich ’s law In addition to the same accuracy and precision. Gravimetric method to separate precipitation and repeated weighing procedures, production efficiency than Eis method increased by 50 to 60%.