ISO 2598-2:1992
Current
The latest, up-to-date edition.
Iron ores — Determination of silicon content — Part 2: Reduced molybdosilicate spectrophotometric method
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English, French
10-12-1992
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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.
| Committee |
ISO/TC 102/SC 2
|
| DevelopmentNote |
Supersedes ISO 4686 (04/2001) Also numbered as BS 7020-5.2(1993). (04/2005)
|
| DocumentType |
Standard
|
| Pages |
8
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| SS-ISO 2598-2:2018 | Identical |
| ISO 3082:2017 | Iron ores — Sampling and sample preparation procedures |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 7764:2006 | Iron ores Preparation of predried test samples for chemical analysis |
| ISO 3083:1986 | Iron ores — Preparation of samples — Manual method |
| ISO 3081:1986 | Iron ores — Increment sampling — Manual method |
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