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分析手续:称取0.2000克矿样于250毫升锥形瓶中,加入0.1克氯酸钾,1:1硫磷混酸10毫升,于高温电炉上加热至三氧化硫白烟聚于瓶口时取下,稍冷,加入10毫升浓盐酸,用15％Sncl_2还原至淡黄色,再加入5％铬酸钠1.5毫升,继用2％三氯化钛小心滴至蓝色出现,加入150毫升水,待蓝色褪尽后30秒,加4滴二苯胺磺钠(0.5％)用重铬酸钾滴至紫红色出现为终点。使用上述方案,在生产实践中,我们的体会是:(1)以10毫升硫磷混酸溶矿,并在溶液中保
Analysis procedures: Weigh 0.2000 grams of ore samples in 250 ml Erlenmeyer flask, add 0.1 grams of potassium chlorate, 1: 1 Phosphorus and Phosphorus mixed acid 10 ml, heated to high temperature electric furnace to sulfur trioxide white smoke gathered in the bottle when the mouth removed, Slightly cold, add 10 ml of concentrated hydrochloric acid, with 15% Sncl_2 reduction to pale yellow, then add 5% sodium chromate 1.5 ml, followed by 2% titanium trichloride drop carefully blue to appear, add 150 ml of water to be blue 30 seconds after the color faded, add 4 drops of sodium diphenylamine sulfonate (0.5%) with potassium dichromate drops to the purple appears as the end. Using the above program, in production practice, our experience is: (1) with 10 ml of phosphoric acid dissolved in acid and dissolved in solution