ISO 4692-1980 rus PDF

Full title and description

ISO 4692:1980 — Iron ores — Determination of calcium and/or magnesium contents — Flame atomic absorption spectrometric method. This International Standard specifies a flame atomic absorption spectrometric procedure for measuring calcium and/or magnesium in iron ores and related materials. A Russian-language record of the standard is available on the ISO site; the published document editions are available in English and French.

Abstract

ISO 4692:1980 describes sample decomposition and preparation procedures (acid digestion, dilution and removal of silica where required), preparation of calcium and magnesium calibration solutions, and measurement by flame atomic absorption spectrometry using appropriate burners (dinitrogen oxide–acetylene for calcium; air–acetylene for magnesium). Performance requirements such as minimum sensitivity, calibration linearity and stability criteria are specified. The method was intended for routine chemical analysis of calcium and magnesium in iron ores and concentrates.

General information

• Status: Withdrawn.
• Publication date: 1 June 1980 (Edition 1, 1980).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 73.060.10 — Iron ores.
• Edition / version: Edition 1 (1980).
• Number of pages: 7 pages.

Key bibliographic and lifecycle details (status, date, ICS, pages) are recorded in the ISO catalogue and commercial standards listings.

Scope

The standard applies to the determination of calcium and/or magnesium contents in iron ores, iron ore concentrates and agglomerates (including sinter products) by flame atomic absorption spectrometric technique. It covers reagents, sample preparation and dissolution procedures, calibration and instrumental requirements necessary to obtain reliable results within the method’s intended concentration ranges. (Note: the standard has been withdrawn and later revised by separate standards for calcium and magnesium determinations.)

Key topics and requirements

• Scope and field of application for Ca and Mg determinations in iron ores by flame AAS.
• Reagents and solutions: preparation of standard calcium and magnesium solutions; use of analytical-grade reagents and distilled or equivalent water.
• Sample decomposition/digestion procedures (acid dissolution, evaporation/ignition and silica removal where applicable).
• Instrumental parameters: recommended flame types (dinitrogen oxide–acetylene for calcium; air–acetylene for magnesium) and burner/aspiration guidance.
• Calibration and quality criteria: minimum sensitivity of calibration solutions, linearity checks across the working range, and stability/statistical limits for absorbance measurements.
• Reporting and safety notes: simultaneous hygroscopic-moisture determination referenced, and manufacturer safety instructions for flame operation.

These topics reflect the method steps and the minimum performance and safety requirements set out in the standard.

Typical use and users

Practitioners in mineral analysis and metallurgical laboratories, quality control personnel at iron ore mining and processing plants, independent testing laboratories, and standards bodies use this type of method for routine and contractual analysis of Ca/Mg in ores and concentrates. Researchers developing or validating analytical procedures for ferrous materials may also refer to the method for historical/benchmark purposes.

Related standards

ISO 4692:1980 has been withdrawn and its subject matter was covered by later ISO standards: ISO 10203:1992 (calcium) and ISO 10204:1992 (magnesium), with subsequent revisions of those documents in later years. National/identical equivalents and related analytical standards (for example those addressing sample moisture or alternative decomposition routes) may also be referenced alongside the method.

Keywords

ISO 4692, iron ores, calcium determination, magnesium determination, flame atomic absorption spectrometry, AAS, sample digestion, analytical method, mineral analysis, withdrawn standard.

FAQ

Q: What is this standard?

A: ISO 4692:1980 is an International Standard that specified a flame atomic absorption spectrometric method for determining calcium and/or magnesium contents in iron ores. It was published in 1980.

Q: What does it cover?

A: It covers required reagents, sample decomposition and preparation, calibration procedures, instrumental flame and burner recommendations, and performance criteria (sensitivity, linearity, stability) for Ca and Mg measurement by flame AAS in iron ores.

Q: Who typically uses it?

A: Metallurgical and mineral analysis laboratories, QA/QC teams at mining and processing operations, testing laboratories and standards organizations that perform or evaluate Ca/Mg determinations in iron ores.

Q: Is it current or superseded?

A: ISO 4692:1980 is withdrawn. Its content was superseded by later standards (notably ISO 10203:1992 and ISO 10204:1992 and their subsequent revisions). Users should consult the later ISO standards for current, authoritative procedures.

Q: Is it part of a series?

A: The topic (atomic-absorption methods for Ca and Mg in iron ores) is covered by a sequence of ISO documents; ISO 4692:1980 was an earlier singular method that was later replaced by separate, more specific ISO standards for calcium and magnesium determinations.

Q: What are the key keywords?

A: iron ores; calcium; magnesium; flame atomic absorption spectrometry (AAS); sample digestion; calibration; ISO 4692; analytical method; withdrawn.