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ISO 11456:2025

Copper and zinc sulfide concentrates — Determination of silver content — Acid digestion and flame atomic absorption spectrometric or inductively coupled plasma optical emission spectrometric method

Publication date:   Oct 22, 2025

General information

60.60   Standard published   Oct 22, 2025

ISO

ISO/TC 183 Copper, lead, zinc and nickel ores and concentrates

International Standard

73.060.99   Other metalliferous minerals

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Scope

This document specifies an acid digestion and flame atomic absorption spectrometric (AAS) method, or inductively coupled plasma optical emission spectrometric (ICP-OES) method for the determination of the mass fraction of silver in copper and zinc sulfide concentrates.
The method is applicable to concentrates having silver contents in the following ranges.
—     copper concentrates: 10 g/t to 800 g/t ;
—     zinc concentrates: 10 g/t to 800 g/t

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PUBLISHED
ISO 11456:2025
60.60 Standard published
Oct 22, 2025