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本文研究了用氧化—还原滴定法测定稀土试样中锰的含量。结果表明:用磷酸和高氯酸分解试样,用硫酸亚铁铵标准溶液在适宜酸度条件下可准确滴定锰,干扰元素铈、钒等可用氧化返滴定予以扣除。分析方法具有准确、快速、方便的优点。
In this paper, oxidation-reduction titration method for the determination of manganese in rare earth samples. The results show that the sample can be decomposed with phosphoric acid and perchloric acid, and the titration of manganese can be accurately carried out with ferrous ammonium sulfate standard solution under suitable acidity conditions. The interference elements such as cerium and vanadium can be deducted by oxidation back droplet titration. The analysis method has the advantages of accuracy, speed and convenience.