硫酸肼还原－铈量法测定铁  

THE CERIOMETRIC TITRATION OF IRON IN ORE BY A REDUCTION WITH HYDRAZINE SULFATE

作　　者：叶小平[1] 陈华章[1] 陈庆邦[1] 

机构地区：[1]广东工学院

出　　处：《矿冶工程》1995年第2期45-47,共3页Mining and Metallurgical Engineering

摘　　要：本文提出以硫酸肼还原－硫酸铈滴定的容量测铁方法，矿样经酸分解后，用硫酸肼还原，通过煮沸除去过量的硫酸肼，随后以亚甲基蓝十甲基橙为指示剂，用硫酸铈滴定Ｆｅ（Ⅱ）。该法能同时避免使用汞盐和铬盐，操作简便，可用于矿石样品中的铁的测定。A pollut-free method for the determination of iron in ore is described whichavoids the use of mercuric salts and dichromates. The sample is decomposed by acid attact.The iron(Ⅲ)in sample solusions is reduced to iron(Ⅱ)by hydrazine sulfate,and the ex-cess of hydrazine sulfate can be removed simply by boiling the solution for some time. Theiron(Ⅱ)is titrated with cerium sulfatewith methylene blue plus methyl orange as an indica-tor. This method has proved to be simple and accurate.

关 键 词：铈量法 氧化还原滴定 铁 硫酸肼 测定 矿样分析 

分 类 号：P575.3[天文地球—矿物学]