分光光度法快速测定铁矿石中磷和铜

Fast Determination of Phosphor and Copper in Iron Ore by Spectrophotometry Ma Yuxiang Huang Huiqin Wang Fenghua

高氯酸氧化磷后，用氟化钠-氯化亚锡将其还原成磷钼蓝，再加氢氧化钠溶液降低酸度，提高了磷钼蓝色泽的稳定性。剩余试液用BCO光度法测定铜量，取得了较好的效果，缩短了分析周期，降低了化验费用。

After oxidized by perchloric acid, phosphor is reduced to phosphomolybdic blue by sodium fluoride-stannous chloride and then sodium hydroxide solution is added to reduce its acidity , thus enhancing stability of colour and lustre of phosphomolybdic blue. The remaining test solution is used to determine the content of copper with BCO photometric method, shortening its analyzing period and reducing test expenses.