ISO 9292:1988 PDF

Name: ISO 9292:1988 — Manganese ores and concentrates — Determination of total iron content — 1,10-Phenanthroline spectrometric method
SKU: ISO 9292:1988
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Manganese ores and concentrates — Determination of total iron content — 1,10-Phenanthroline spectrometric method

Название (английский):

ISO 9292:1988

Manganese ores and concentrates — Determination of total iron content — 1,10-Phenanthroline spectrometric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 3
Дата публикации:: 8 декабря 1988 г.
Издание:: ISO IS 9292 edition 1 version 1
ICS:: 73.060.20

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Описание (английский):

The method is applicable to products having a total iron content from 0.1 % (m/m) to 15 % (m/m). ISO 9292 should be read in conjunction with ISO 4297. Specifies principle, reactions, reagents, apparatus, sampling and samples, procedure and expression of results.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 9292:1988 specifies the 1,10-phenanthroline spectrometric method for determining the total iron content in manganese ores and concentrates. This internationally recognized standard is applicable to products with total iron contents ranging from 0.1% to 15% by mass. It provides detailed instructions on the chemical reactions, reagents, apparatus, sampling, and procedure necessary for accurate and reproducible iron analysis. The standard should be read in conjunction with ISO 4297, which outlines general chemical analysis methods for manganese ores.

Key Topics

Scope and Application The method targets manganese ores and concentrates, applicable for iron determination within a concentration scope of 0.1% to 15% (m/m). It is suited for laboratory settings requiring precise iron analysis according to international norms.

Analytical Principle The core of the method is the formation of a coloured complex of ferrous iron (Fe(II)) with 1,10-phenanthroline under slightly acidic conditions (pH 4 to 5). Ferric iron (Fe(III)) present in the sample is first chemically reduced by hydroxylammonium chloride to Fe(II). The resulting Fe(II)-phenanthroline complex exhibits maximum absorbance between 508 nm and 512 nm, enabling spectrometric measurement.

Reagents and Apparatus Essential reagents include hydrochloric acid, sulfuric acid, hydrofluoric acid, potassium pyrosulfate, hydroxylammonium chloride solution, buffer solutions, and 1,10-phenanthroline solution. Equipment includes common laboratory glassware, platinum or platinum-alloy crucibles for sample preparation, and a spectrophotometer or photoelectrocolorimeter capable of absorbance measurements within the required wavelengths.

Sample Preparation and Analysis Procedure The method details steps for sample dissolution, residue treatment, and complex formation. It emphasizes precise aliquoting, use of blank tests, and calibration curve preparation with standard iron solutions to ensure accuracy. The standard also specifies sample granularity (below 100 µm) and references ISO 4296 parts 1 and 2 for sampling and sample preparation.

Calculation and Expression of Results Iron content is calculated by correlating absorbance values against a calibration curve, corrected for blanks. The results are expressed as percentage mass of total iron, with clearly defined formulas and correction factors to convert measured values to dry basis iron content. Tolerances for repeatability and reproducibility of parallel determinations are provided to assure quality control.

Applications

Quality Control in Mining and Metallurgy ISO 9292:1988 assists mining companies and metallurgical laboratories in accurately assessing iron impurities in manganese ores and concentrates, crucial for processing and refining.

Export and Trade Compliance The standard supports consistent iron content evaluation, facilitating international trade by providing a common analytical method recognized worldwide.

Research and Development Laboratories performing mineralogical studies and developing beneficiation techniques use this standard to quantify iron distribution in manganese-bearing materials.

Environmental Monitoring and Regulatory Testing Environmental labs analyzing ore deposits for regulatory compliance benefit from this standardized approach for iron quantification.

Related Standards

ISO 4297:1978 – General instructions for chemical analysis of manganese ores and concentrates; complements ISO 9292 by outlining broader chemical analytical procedures.

ISO 4296-1:1984 & ISO 4296-2:1983 – Cover sampling by increments and sample preparation for manganese ores, essential for preparing representative samples analyzed under ISO 9292.

ISO 5438 – May include additional related mineral analysis techniques and sampling standards in mining contexts.

ISO 9292:1988 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Keywords

Технические детали

ISO 4297:1978

Manganese ores and concentrates — Methods of chemical analysis — General instructions

ISO 4296-1:1984

Manganese ores — Sampling — Part 1: Increment sampling

ISO 4296-2:1983

Manganese ores — Sampling — Part 2: Preparation of samples

SIST ISO 4297:2001

Manganese ores and concentrates -- Methods of chemical analysis -- General instructions

SIST ISO 4296-2:1998

Manganese ores -- Sampling -- Part 2: Preparation of samples

ISO 5438:1985

Acid-grade and ceramic-grade fluorspar — Determination of silica content — Reduced molybdosilicate spectromet…