ISO 23201:2015 PDF

Aluminium oxide primarily used for production of aluminium — Determination of trace elements — Wavelength dispersive X-ray fluorescence spectrometric method

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Title (English):

ISO 23201:2015

Aluminium oxide primarily used for production of aluminium — Determination of trace elements — Wavelength dispersive X-ray fluorescence spectrometric method

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 32
Publication date:: November 16, 2015
Edition:: ISO IS 23201 edition 1 version 1
ICS:: 71.100.10

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Description (English):

ISO 23201:2015 sets out a wavelength dispersive X-ray fluorescence spectrometric method for the analysis of aluminium oxide for trace amounts of any or all of the following elements: sodium, silicon, iron, calcium, titanium, phosphorus, vanadium, zinc, manganese, gallium, potassium, copper, chromium and nickel. These elements are expressed as the oxides Na2O, SiO2, Fe2O3, CaO, TiO2, P2O5, V2O5, ZnO, MnO, Ga2O3, K2O, CuO, Cr2O3, and NiO on an un-dried sample basis. The method is applicable to smelting-grade aluminium oxide. The concentration range covered for each of the components is also given.

Technical details

Technical committee: ISO/TC 226 - Materials for the production of primary aluminium
SKU: ISO 23201:2015

Abstract

Overview

ISO 23201:2015 specifies a wavelength dispersive X‑ray fluorescence (WDXRF) spectrometric method for determining trace elements in aluminium oxide (alumina) primarily used for aluminium production. The method is designed for smelting‑grade alumina and reports analytes as oxides (for example Na2O, SiO2, Fe2O3, TiO2). Sample preparation uses fusion into a borate glass disc (fused bead) and analysis on a wavelength dispersive X‑ray fluorescence spectrometer.

Key topics and technical requirements

Analytical technique: Wavelength dispersive X‑ray fluorescence (WDXRF) with vacuum path instrumentation verified for precision (see AS 2563).
Sample preparation: Fusion of alumina sample into a borate glass disc using lithium tetraborate / lithium metaborate flux; use of platinum/platinum‑alloy crucibles and moulds; strict cleaning to avoid contamination (silica is a common contaminant).
Calibration & QA:
- Two‑point regression calibration with synthetic standards from high‑purity chemicals.
- Use of a certified reference material to verify calibration.
- Intensity measurements corrected for spectrometer drift.
Scope of analytes and concentration ranges (expressed as oxides, on an un‑dried basis):
- Na2O: 0.10–1.00%
- SiO2, Fe2O3: 0.005–0.05%
- CaO: 0.01–0.10%
- TiO2, V2O5, ZnO, MnO, K2O, CuO, Cr2O3, NiO: 0.001–0.010% (varies by element)
- P2O5: 0.001–0.050%
- Ga2O3: 0.001–0.020%
Reagents & apparatus: Specifies high‑purity oxide chemicals for standards, flux composition, platinum crucibles/moulds, furnaces (1100–1200 °C), vibratory mills with non‑contaminating parts, and precautions for fusion (use oxidizing flame to avoid Fe reduction/alloying).
Performance verification: Instrument performance and method precision assessed according to referenced normative documents.

Applications and users

This standard is intended for:

Alumina producers and quality control laboratories for routine analysis of smelting‑grade alumina.
Primary aluminium smelters requiring incoming material certification and process control.
Independent testing labs, instrument vendors and R&D groups validating WDXRF methods for trace elements. Practical uses include supplier qualification, batch release testing, process troubleshooting, and compliance with metallurgical specifications where trace impurities affect smelting performance.

Related standards

ISO 802 - Preparation and storage of test samples (alumina)
ISO 2927 - Sampling of aluminium oxide for aluminium production
AS 2879.7–1997 - Basis for this method (Australian Standard)
AS 2563 - Instrument precision verification (WDXRF)

Keywords: ISO 23201:2015, aluminium oxide, alumina, WDXRF, wavelength dispersive X‑ray fluorescence, trace elements, smelting‑grade alumina, fused bead, calibration, quality control.

Related standards

Mentioned in the description and other ISO standards

Abstract

Overview

Key topics and technical requirements

Analytical technique: Wavelength dispersive X‑ray fluorescence (WDXRF) with vacuum path instrumentation verified for precision (see AS 2563).
Sample preparation: Fusion of alumina sample into a borate glass disc using lithium tetraborate / lithium metaborate flux; use of platinum/platinum‑alloy crucibles and moulds; strict cleaning to avoid contamination (silica is a common contaminant).
Calibration & QA:
- Two‑point regression calibration with synthetic standards from high‑purity chemicals.
- Use of a certified reference material to verify calibration.
- Intensity measurements corrected for spectrometer drift.
Scope of analytes and concentration ranges (expressed as oxides, on an un‑dried basis):
- Na2O: 0.10–1.00%
- SiO2, Fe2O3: 0.005–0.05%
- CaO: 0.01–0.10%
- TiO2, V2O5, ZnO, MnO, K2O, CuO, Cr2O3, NiO: 0.001–0.010% (varies by element)
- P2O5: 0.001–0.050%
- Ga2O3: 0.001–0.020%
Reagents & apparatus: Specifies high‑purity oxide chemicals for standards, flux composition, platinum crucibles/moulds, furnaces (1100–1200 °C), vibratory mills with non‑contaminating parts, and precautions for fusion (use oxidizing flame to avoid Fe reduction/alloying).
Performance verification: Instrument performance and method precision assessed according to referenced normative documents.

Applications and users

This standard is intended for:

Alumina producers and quality control laboratories for routine analysis of smelting‑grade alumina.
Primary aluminium smelters requiring incoming material certification and process control.
Independent testing labs, instrument vendors and R&D groups validating WDXRF methods for trace elements. Practical uses include supplier qualification, batch release testing, process troubleshooting, and compliance with metallurgical specifications where trace impurities affect smelting performance.

Related standards

ISO 802 - Preparation and storage of test samples (alumina)
ISO 2927 - Sampling of aluminium oxide for aluminium production
AS 2879.7–1997 - Basis for this method (Australian Standard)
AS 2563 - Instrument precision verification (WDXRF)

Keywords: ISO 23201:2015, aluminium oxide, alumina, WDXRF, wavelength dispersive X‑ray fluorescence, trace elements, smelting‑grade alumina, fused bead, calibration, quality control.

ISO 23201:2015 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

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