摘要
硅酸盐经浓盐酸和少量的SnCl2溶液溶解后,用SnCl2-TiCl3还原试液中Fe(Ⅲ),使Fe(Ⅲ)还原为Fe(Ⅱ),再以KzCr2O7滴定,测得铁含量。本方法对实验操作温度,试样溶解酸的选择有一定的要求,宜选用非氧化性强酸在30-60℃溶解矿样。
Silicate is dissolved by hydrochloric acid and a little amount of SnClz, and is used SnCl2- TiCl2to return Fe( Ⅲ )in test solution to Fe( Ⅱ), then to make titration with K2 Cr2O7, Fe's content can he determined. This method needs the temperature of experiment operation and the choice of melting acid. Non--oxidized strong acid within the temperature from 30 to 60℃ is the best choice.
出处
《贵州科技工程职业学院学报》
2008年第4期15-16,18,共3页
GUIZHOU SCIENCE AND TECHNOLOGY PROFESSIONAL COLLEGE