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金属及其合金中常量硫的测定多用燃烧法和重量法,对微量硫采用以分离出硫化氢的干法和湿法技术。干法技术即氢化法,混法技术即酸蒸馏法,所用混合酸体系有氢碘酸-磷酸、钛[Ⅲ]-磷酸、CrCl_2-磷酸及磷酸-磷酸亚锡。本报告采用磷酸-磷酸亚锡蒸馏法,以镉盐微量滴定法进行测定。实验部分一仪器装置及主要试剂蒸馏装置和蒸酸装置磷酸-磷酸亚锡溶剂:100ml H_3PO_4+13.5gSnCl_2·2H_2O,制备了方法见蒸酸条件。镉标准溶液:0.4mg·ml~(-1);双硫腙丙酮溶液:0.04%;硫标准溶
Determination of sulfur in metals and their alloys Multi-purpose combustion and gravimetric methods are used for dry and wet separation of trace amounts of sulfur to separate hydrogen sulphide. Dry technology that hydrogenation, mixing technology that is acid distillation, mixed acid system used in the hydroiodic acid - phosphate, titanium [Ⅲ] - phosphate, CrCl_2-phosphate and phosphoric acid - stannous phosphate. This report uses phosphoric acid - stannous phosphate distillation, cadmium salt micro titration method was measured. Experimental part of an apparatus and the main reagent Distillation unit and the steam plant Phosphoric acid - stannous phosphate solvent: 100ml H_3PO_4 + 13.5gSnCl_2 · 2H_2O, prepared See the conditions of the steamed. Cadmium standard solution: 0.4mg · ml -1; Dithizone acetone solution: 0.04%; Sulfur standard solution