摘要
在 1.2~ 1.3mol/L的高氯酸酸度下 ,加硝酸铋催化 ,加钼酸铵、抗坏血酸 ,形成磷钼蓝 ,在690nm处 ,磷在 0~ 60 μg/5 0mL符合比尔定律 ,回收率在 97%~ 10 2 %之间 。
In medium of 1.2~1.3 mol/L perchloride acid,phosphorus is catalysed in bismuth nitrat,forming phosphorus molybdate blue with ammonium molybdate and ascorbic acid as reducing agent.The complex exhibits maximum absorption at 690 nm. Beer's law is obeyed in the range of 0~60 μg/50 mL phosphorus and the recovery is 97%~102%.The method is used to determinate phosphorus in magnetic iron with satisfactory results.
出处
《中国钼业》
2002年第2期34-35,共2页
China Molybdenum Industry
关键词
铋磷钼蓝光度法
测定
磁铁精矿
磷
Spectrophotometric method,Magnetic iron,Bismuth phosphorus molybdate blue,Phosphorus.