摘要
鉴于亚砷酸钠-亚硝酸钠滴定法测定铁矿石中低含量锰存在准确度差的弊端，作了光度法的分析偿试。改进后检出限为0．03mg／L，线性范围为0～25mg／L。经部分铁矿石样品验证，方法的相对标准偏差不超过2．5％。
The Spectrophotometric Method has improved in view of disadvantages of inaccuracy in determination of manganese content in iron ore by the Sodium Arsenite -Sodium Nitrite Titration. After improvement, the detection limit is 0.03mg/L, linear range is 0 - 25mg/L. Validated by some iron ore samples, the relative standard deviation of the method does not exceed 2. 5%.
关键词
铁矿石
锰
测定
光度法
iron ore
manganese
determination
Spectrophotometric method
