ISO 6331:2024 PDF
Chromium ores and concentrates — Determination of chromium content — Titrimetric method
Chromium ores and concentrates — Determination of chromium content — Titrimetric method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 19
- Дата публикации:
- 25 ноября 2024 г.
- Издание:
- ISO IS 6331 edition 2 version 1
- ICS:
- 73.060.30
This document specifies a titrimetric method for the determination of the chromium content of chromium ores and concentrates having a chromium content greater than a mass fraction of 7,00 %.
Abstract
Overview
ISO 6331:2024 - "Chromium ores and concentrates - Determination of chromium content - Titrimetric method" - is the second edition international standard that specifies a laboratory titrimetric procedure for determining chromium in chromium ores and concentrates with a chromium mass fraction greater than . The method covers sample decomposition by sodium peroxide fusion, oxidation of Cr(III) to chromate, and quantification of chromium(VI) by titration (visual or potentiometric).
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