ISO 3390-1976 rus PDF

Full title and description

ISO 3390:1976 — Aluminium oxide primarily used for the production of aluminium — Determination of manganese content — Flame atomic absorption method. The standard specifies a procedure for dissolving a test sample and measuring the manganese (Mn) content by flame atomic absorption spectrophotometry (air–acetylene flame, Mn line at 279.5 nm) for aluminium oxide used in aluminium production.

Abstract

Applicable to aluminium oxide (used primarily for the production of aluminium) with Mn content in the range 0.0002 % (m/m) to 0.005 % (m/m). The method describes sample dissolution by heating in a sealed borosilicate glass tube with hydrochloric acid at controlled 250 °C, possible preliminary extraction if instrument sensitivity is insufficient, aspiration into an air–acetylene flame and spectrophotometric measurement at the 279.5 nm manganese line.

General information

• Status: Withdrawn (withdrawal confirmed 4 February 2016).
• Publication date: 1976-09 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.100.10 — Materials for the production of primary aluminium.
• Edition / version: Edition 1 (1976).
• Number of pages: 6.

Scope

This International Standard specifies a flame atomic absorption (AAS) method for determination of manganese in aluminium oxide destined for primary aluminium production. It covers sample dissolution (HCl attack in sealed borosilicate tube at ≈250 °C), possible preliminary extraction when instrument sensitivity is limited, and measurement by aspiration in an air–acetylene flame at the manganese resonance line 279.5 nm. The method is intended for Mn mass fractions approximately between 0.0002 % and 0.005 %.

Key topics and requirements

• Sample preparation: acid dissolution in sealed borosilicate tubes with controlled heating (≈250 °C) to bring Mn into solution.
• Analytical technique: flame atomic absorption spectrophotometry (air–acetylene flame) using the Mn line at 279.5 nm.
• Analytical range and sensitivity: designed for Mn mass fractions ~0.0002–0.005 % (m/m); includes provision for preliminary extraction if instrument sensitivity is insufficient.
• Quality and traceability: specifies procedural steps to ensure reproducible dissolution and measurement (controls on digestion, aspiration and measurement conditions).
• Normative relationships: references methods for sample preparation and storage (see related standards such as ISO 2073 and ISO 802 in national/shop listings).

Typical use and users

Primary users were analytical and quality-control laboratories in the aluminium industry, producers of aluminium oxide (alumina), materials testing laboratories, and standards bodies. Historically used for acceptance testing and process control where low-level manganese determination in feedstock alumina was required. After withdrawal, laboratories may continue to use comparable validated methods or updated standards/techniques.

Related standards

Standards and documents commonly referenced alongside ISO 3390 include sample preparation and sampling standards for aluminium oxide (for example ISO 2073 — preparation of sample solution for analysis by HCl under pressure — and ISO 802 — preparation and storage of test samples) as noted in national curation/sales entries and adoptions. National standards (for example certain ČSN adoptions) have incorporated or adapted ISO 3390 procedures.

Keywords

aluminium oxide; alumina; manganese determination; Mn; flame atomic absorption; AAS; sample dissolution; hydrochloric acid digestion; air–acetylene flame; 279.5 nm; ISO 3390; aluminium production.

FAQ

Q: What is this standard?

A: ISO 3390:1976 is an ISO International Standard that specified a flame atomic absorption spectrometric method for determining manganese content in aluminium oxide used for aluminium production.

Q: What does it cover?

A: It covers sample dissolution (HCl in sealed borosilicate tube at controlled ≈250 °C), any necessary preliminary extraction for low-level determinations, aspiration into an air–acetylene flame and spectrophotometric measurement at the 279.5 nm Mn line — applicable for Mn content ≈0.0002–0.005 % (m/m).

Q: Who typically uses it?

A: Analytical and QC laboratories in the aluminium and alumina industries, testing laboratories performing feedstock analysis, and standards organizations. After withdrawal, these users typically move to other validated methods or national adaptations.

Q: Is it current or superseded?

A: ISO 3390:1976 has been withdrawn — the ISO life-cycle records show withdrawal finalized 4 February 2016. Users should consult current ISO publications or national standards for up-to-date methods; some commercial distributors still list the original PDF or translations for purchase.

Q: Is it part of a series?

A: It is a standalone method standard within the materials/metallics sector and was developed by ISO/TC 226 (materials for the production of primary aluminium). It is related to other ISO documents on sample preparation and testing for aluminium oxide (e.g., ISO 2073, ISO 802) that address sampling and solution preparation.

Q: What are the key keywords?

A: Aluminium oxide, alumina, manganese, Mn, flame atomic absorption, AAS, sample digestion, hydrochloric acid, air–acetylene flame, 279.5 nm.