ISO 2598-2:1992
Iron ores; determination of silicon content; part 2: reduced molybdosilicate spectrophotometric method
- Standard No.
- ISO 2598-2:1992
- Release Date
- 1992
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 2598-2:1992
- Scope
- The method is based on decomposition of the test portion by fusion with sodium tetraborate and treatment with dilute nitric acid, addition of ammonium molybdate to convert silicate into a molybdatosilicate complex, reduction to molybdenum blue with ascorbic acid, and spectrophotometric measurement of the absorbance of the molybdenum blue complex at a wavelength of approximately 600 nm. Applies to silicon contents between 0,1 % and 5,0 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products, especially for ores containing fluorine.
ISO 2598-2:1992 history
- 1992 ISO 2598-2:1992 Iron ores; determination of silicon content; part 2: reduced molybdosilicate spectrophotometric method
