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ISO 5418-1:1994

Iron ores — Determination of copper content — Part 1: 2,2'-Biquinolyl spectrophotometric method

Publication date:   May 19, 1994

95.99 Withdrawal of Standard   Dec 1, 2006

General information

95.99 Withdrawal of Standard   Dec 1, 2006

ISO

ISO/TC 102/SC 2 Chemical analysis

International Standard

73.060.10   Iron ores

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Scope

The principle of the method specified is decomposition of the test portion by treatment with hydrochloric, nitric and perchloric acids, dehydration of silica, dilution and filtration, ignition of the residue, treatment with hydrofluoric and sulfuric acids, fusion with sodium carbonate, dissolution of the cooled melt in the filtrate, reduction of copper(II) to form the red-violet complex of copper(I), spectrophotometric measurement of the absorbance of the complex at approximately 545 nm. The method is applicable to copper contents between 0,004 % (m/m) and 0,8 % (m/m) in natural iron ores, iron ore concentrates and agglomerates, including sinter products.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 5418:1984

NOW

WITHDRAWN
ISO 5418-1:1994
95.99 Withdrawal of Standard
Dec 1, 2006

REVISED BY

PUBLISHED
ISO 5418-1:2006