EN ISO 14719:2011 PDF

Chemical analysis of refractory material glass and glazes - Determination of Fe2+ and Fe3+ by the spectral photometric method with 1,10-phenanthroline (ISO 14719:2011)

Title (English):

EN ISO 14719:2011

Chemical analysis of refractory material glass and glazes - Determination of Fe2+ and Fe3+ by the spectral photometric method with 1,10-phenanthroline (ISO 14719:2011)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 20
Publication date:: December 1, 2011
Edition:: CEN EN 14719 edition 1 version 1
ICS:: 81.040.01

Document language:

enru

Delivery time:1–7 days

Price:66 €

Description (English):

ISO 14719:2011 specifies a spectral photometric method with 1,10-phenanthroline for the quantitative determination of Fe2+ and Fe3+ in oxidic raw and basic materials for ceramics, glass and glazes, e.g. feldspar, kaolinites, clay, limestone, quartz refractory materials. ISO 14719:2011 could be extended to other aluminosilicate materials, providing that uncertainty data is produced to support it. However, there might be problems in the decomposition of high-purity alumina and chrome ore samples. The method is not suitable for reduced materials, such as silicon carbide, graphite-magnesia, etc.

Technical details

Technical committee: CEN/TC 187 - Refractory products and materials
SKU: EN ISO 14719:2011

Abstract

Overview

EN ISO 14719:2011 / ISO 14719:2011 specifies a spectral photometric method using 1,10‑phenanthroline for the quantitative determination of Fe2+ and Fe3+ in oxidic raw and basic materials for refractories, glass and glazes. The method is applicable to materials such as feldspar, kaolinites, clays, limestone, quartz and other aluminosilicates (with supporting uncertainty data). It is not suitable for reduced materials (e.g., silicon carbide, graphite‑magnesia) and may present decomposition issues for high‑purity alumina or chrome ores.

Key topics and technical requirements

Principle: Samples are decomposed with hydrofluoric acid (HF) and sulfuric acid (H2SO4). Fe2+/Fe3+ form a pink complex with 1,10‑phenanthroline and are measured spectrophotometrically at 510 nm. Results are obtained by calibration with iron standard solutions; total iron is the sum of Fe2+ and Fe3+ determinations.
Two methods:
- Method A: Uses larger sample mass (≈ 500 mg) and an air‑ and light‑tight reaction vessel purged with nitrogen to avoid oxidation.
- Method B: Uses smaller sample mass (20–30 mg) and stabilizes solutions with nitrilotriacetic acid, cooled on ice; suitable when reduced reagent volumes are preferred.
Sample preparation: Grind to

Related standards

Mentioned in the description and other EN standards

Overview

Key topics and technical requirements

Principle: Samples are decomposed with hydrofluoric acid (HF) and sulfuric acid (H2SO4). Fe2+/Fe3+ form a pink complex with 1,10‑phenanthroline and are measured spectrophotometrically at 510 nm. Results are obtained by calibration with iron standard solutions; total iron is the sum of Fe2+ and Fe3+ determinations.
Two methods:
- Method A: Uses larger sample mass (≈ 500 mg) and an air‑ and light‑tight reaction vessel purged with nitrogen to avoid oxidation.
- Method B: Uses smaller sample mass (20–30 mg) and stabilizes solutions with nitrilotriacetic acid, cooled on ice; suitable when reduced reagent volumes are preferred.
Sample preparation: Grind to

EN ISO 14719:2011 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

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