ISO 11456:2025
International Standard
Current Edition
·
Approved on
22 October 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
ISO 11456:2025 Files
English
40 Pages
Current Edition
BHD
84.1
ISO 11456:2025 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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