ISO 11456:2025

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