GB/T 7739.15-2025Methods for chemical analysis of gold concentrates - Part 15: Determination of platinum group element contents (English PDF)
金精矿化学分析方法 第15部分：铂族元素量的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 31, 2025
Implementation date
May 1, 2026
Scope
GB/T 7739.15-2025 is the English-translated version of 金精矿化学分析方法 第15部分：铂族元素量的测定.
GB/T 7739.15-2025 is the Chinese standard "Methods for chemical analysis of gold concentrates - Part 15: Determination of platinum group element contents". Its scope clause reads: This document describes the methods for determining the amounts of platinum group elements platinum, palladium, rhodium, iridium, and ruthenium in gold concentrate.
This document applies to the determination of platinum group elements (platinum, palladium, rhodium, iridium, and ruthenium) in gold concentrate. Method 1.Lead-based gold enrichment - inductively coupled plasma atomic absorption spectrometry (ICP-AES).
Mass spectrometry determination range. Platinum 10.00 ng/g ~ 10000.00 ng/g, Palladium 15.00 ng/g ~ 22000.00 ng/g; Method 2.Nickel matte assay Enrichment-inductively coupled plasma mass spectrometry (ICP-MS) determination range.
Platinum 10.00 ng/g ~ 10000.00 ng/g, Palladium 10.00 ng/g ~ 10000.00 ng/g, Rhodium 10.00 ng/g ~ 10000.00 ng/g, Iridium 10.00 ng/g ~ 10000.00 ng/g, Ruthenium 10.00 ng/g ~ 10000.00ng/g. Its clauses include terms and definitions.
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Document preview — GB/T 7739.15-2025
National Standard of the People's Republic of China
- ICS
- 73.060.99
- Classification
- D 46
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1.Scope
- 2 Normative References
- 3.Terms and Definitions
- 4.Method 1.Lead-gold enrichment-inductively coupled plasma mass spectrometry
- Appendix A (Informative) Instrument Operating Conditions
1 Scope
This document describes the methods for determining the amounts of platinum group elements platinum, palladium, rhodium, iridium, and ruthenium in gold concentrate.
This document applies to the determination of platinum group elements (platinum, palladium, rhodium, iridium, and ruthenium) in gold concentrate. Method 1.Lead-based gold enrichment - inductively coupled plasma atomic absorption spectrometry (ICP-AES).
Mass spectrometry determination range. Platinum 10.00 ng/g ~ 10000.00 ng/g, Palladium 15.00 ng/g ~ 22000.00 ng/g; Method 2.Nickel matte assay
Enrichment-inductively coupled plasma mass spectrometry (ICP-MS) determination range. Platinum 10.00 ng/g ~ 10000.00 ng/g, Palladium 10.00 ng/g ~
10000.00 ng/g, Rhodium 10.00 ng/g ~ 10000.00 ng/g, Iridium 10.00 ng/g ~ 10000.00 ng/g, Ruthenium 10.00 ng/g ~
10000.00ng/g.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 17433 Basic Terminology for Chemical Analysis of Metallurgical Products
3 Terms and Definitions
The terms and definitions defined in GB/T 17433 apply to this document.
4 Method 1.Lead-gold enrichment-inductively coupled plasma mass spectrometry
4.1 Principle
The sample was batched and melted to obtain lead buttons containing precious metals of appropriate quality and brittle slag. After ash blowing, the lead buttons formed a precious metal alloy.
After digestion with nitric acid and hydrochloric acid, the intensities of platinum and palladium were determined by inductively coupled plasma mass spectrometry in a mixed acid medium.
The values were calculated using the standard curve method to determine the platinum and palladium content.
4.2 Reagents or Materials
Unless otherwise specified, only reagents confirmed to be of analytical grade and double-distilled or deionized water or water of equivalent purity shall be used in the experiment.
4.2.1 Sodium carbonate
powder.
4.2.2 Lead oxide
powder.
4.2.3 Silica
Powder.
4.2.4
Glass powder.
4.2.5 Borax
Powder.
4.2.6 Potassium nitrate
powder.
4.2.7
Flour.
GB/T 42333 | GB/T 20899.1 | YS/T 254.1 | GB/T 7739.9 | GB/T 7739.10 | GB/T 7739.8 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Normative references
Editions of GB/T 7739.15
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7739.15-2025 | Methods for chemical analysis of gold concentrates - Part 15: Determination of platinum group elements contents | current edition | Current |
This page sells the current edition, GB/T 7739.15-2025. Earlier editions are listed for reference only.
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Related Standards
GB/T 17433-2014 — Foundation terms for chemical analysis of metallurgical products
GB/T 7739.1-2019 — Methods for chemical analysis of gold concentrates - Part 1: Determination of gold and silver contents
GB/T 7739.10-2025 — Methods for chemical analysis of gold concentrates — Part 10: Determination of antimony content
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