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ISO 11456:2025Published

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

Concentrés sulfurés de cuivre et de zinc — Dosage de l'argent — Méthode par digestion acide et spectrométrie d'absorption atomique dans la flamme ou spectroscopie d’émission optique par plasma à couplage inductif

Abstract / 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