甲基橙指示还原终点铈量法测定铁矿石中全铁含量

Determination of Full Iron Content in Iron Ore by Cerium Metering Metyod with Methlorange Indicating Final Reduction Point

铁矿石经HCl-KF+HClO_4溶样后,用二氯化锡还原Fe^(3+)为Fe^(2+),以甲基橙做指示剂指示还原终点,用铈量法测定铁矿石中全铁的含量。方法简便、快速、终点敏锐。精密度好,准确度高。

After dissolving the iron ore in HCl-KF-HC104,Fe3+ in the iron ore was reduced to Fe2+ with tin dichloride. The full iron content in the iron ore was determined by cerium metering method using methylorange as indicator to indicate final reduction point. The above mentioned method is simple and quick with sharp final point and high accuracy.