ISO 2598-2:1992
Iron ores — Determination of silicon content — Part 2: Reduced molybdosilicate spectrophotometric method
Iron ores — Determination of silicon content — Part 2: Reduced molybdosilicate spectrophotometric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 10 декабря 1992 г.
- Издание:
- ISO IS 2598 edition 1 version 1
- ICS:
- 73.060.10
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.
Abstract
Похожие стандарты
Стандарты, упомянутые в описании