GB/T 3884.2-2025: Methods for chemical analysis of copper concentrates - Part 2: Determination of gold and silver contents - Flame atomic absorption spectrmetric method and fire assay method

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Scope

This document describes the methods for determining the gold and silver content in
copper concentrate and copper slag concentrate, using flame atomic absorption
spectrometry and fire assay.
Methods 1 and 2 of this document are applicable to the determination of gold and silver
content in copper concentrate and copper slag concentrate. Method 1 has a
determination range of silver. 10.0 g/t ~ 500.0 g/t; Method 2 has a determination range
of gold. 0.50 g/t ~ 56.00 g/t, silver. 50.0 g/t ~ 2500.0 g/t. Method 3 is applicable to the
determination of gold and silver content in copper sulfide concentrate with a copper
content of 15% ~ 60%, with a determination range of gold. 0.50 g/t ~ 300.00 g/t, silver.
25.0 g/t ~ 1500.0 g/t.

Basic Data

Standard ID	GB/T 3884.2-2025 (GB/T3884.2-2025)
Description (Translated English)	Methods for chemical analysis of copper concentrates - Part 2: Determination of gold and silver contents - Flame atomic absorption spectrmetric method and fire assay method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H13
Classification of International Standard	77.120.30
Word Count Estimation	46,498
Date of Issue	2025-08-29
Date of Implementation	2026-03-01
Older Standard (superseded by this standard)	GB/T 3884.2-2012, GB/T 3884.14-2012
Issuing agency(ies)	State Administration for Market Regulation; Standardization Administration of China