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GB/T 29509.1-2025: Methods for chemical analysis of gold-loaded carbon - Part 1: Determination of gold and silver contents
Status: Valid GB/T 29509.1: Evolution and historical versions
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Methods for chemical analysis of gold-loaded carbon - Part 1: Determination of gold and silver contents
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GB/T 29509.1-2025
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| GB/T 29509.1-2013 | English | 209 |
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Methods for chemical analysis of gold-loaded carbon -- Part 1: Determination of gold content
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GB/T 29509.1-2013
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PDF similar to GB/T 29509.1-2025
Basic data | Standard ID | GB/T 29509.1-2025 (GB/T29509.1-2025) | | Description (Translated English) | Methods for chemical analysis of gold-loaded carbon - Part 1: Determination of gold and silver contents | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D46 | | Classification of International Standard | 73.060.99 | | Word Count Estimation | 14,175 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 29509.1-2013 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 29509.1-2025: Methods for chemical analysis of gold-loaded carbon - Part 1: Determination of gold and silver contents
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ICS 73.060.99
CCSD46
National Standard of the People's Republic of China
Replaces GB/T 29509.1-2013
Chemical analysis method of gold-loaded carbon
Part 1.Determination of gold and silver content
Released on June 30, 2025
Implementation on January 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Method 1.Determination of gold and silver content - Fire assay gravimetric method (arbitration method) 1
4.1 Principle 1
4.2 Reagents or Materials 1
4.3 Instruments and Equipment 2
4.4 Preparation of samples and test materials 2
4.5 Test Step 3
4.6 Experimental data processing 4
4.7 Precision 5
4.8 Test Report 6
5 Method 2.Determination of gold content --- flame atomic absorption spectrometry 6
5.1 Principle 6
5.2 Reagents or materials 6
5.3 Instruments and Equipment 7
5.4 Preparation of samples and test materials 7
5.5 Test Step 7
5.6 Experimental data processing 8
5.7 Precision 8
5.8 Test report 9
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document is Part 1 of GB/T 29509 "Chemical analysis methods of gold-loaded carbon". GB/T 29509 has been published in the following two parts.
part.
--- Part 1.Determination of gold and silver content;
--- Part 2.Determination of silver content - Flame atomic absorption spectrometry.
This document replaces GB/T 29509.1-2013 "Chemical analysis methods of gold-loaded carbon Part 1.Determination of gold content" and GB/T 29509.1-
Compared with.2013, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The determination range of silver content has been increased (see Chapter 1);
b) Added the sample weight table for silver content (see 4.4.2);
c) Added the step of determining the amount of silver (see 4.5);
d) Added the calculation formula for silver content (see 4.6);
e) Increased the precision of silver content (see 4.7).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the National Gold Standardization Technical Committee (SAC/TC379).
This document was drafted by. Changchun Gold Research Institute Co., Ltd., Zijin Mining Group Co., Ltd., and SDIC Jincheng Metallurgical Co., Ltd.
Company, Inner Mongolia Taiping Mining Co., Ltd., Jiangxi Sanhe Gold Industry Co., Ltd., Shandong Gold Mining Technology Co., Ltd. Metallurgical Laboratory Branch
Hunan Mineral Resources Group Co., Ltd., Shandong Gold Geology and Mineral Exploration Co., Ltd., Songxian Jinniu Co., Ltd., Yantai
Jinao Environmental Protection Technology Co., Ltd. and Yunnan Gold Mining Group Precious Metals Testing Co., Ltd.
The main drafters of this document are. Lu Xingen, Ma Lijun, Liu Shuo, Chen Zhuhai, Liu Hui, Li Qiang, Zhao Kai, Zhang Guangsheng, Li Zhengxu, Zhu Xingfu,
Long Xiujia, Liu Juan, Wang Ju, Yang Zhifeng, Zhang Jinlei, Qiao Xiaohu, Wang Zhiqiang, Lü Hui, Fan Ruhong, Wang Jidong, Chen Xiaoke, Lü Shunyi, Meng Xianwei,
Du Xiaowang.
The previous versions of this document and the documents it replaces are as follows.
---GB/T 29509.1-2013;
---This is the first revision.
introduction
Gold-loaded carbon is defined as activated carbon after gold adsorption, which is an intermediate product in the gold extraction process.
Establish a unified testing and evaluation method for the production and trade of gold-loaded carbon, providing accurate and reliable technology for the efficient recovery of gold resources and fair trade
support.
GB/T 29509 is intended to consist of two parts.
--- Part 1.Determination of gold and silver content. The purpose is to specify the fire assay gravimetric method, gold gravimetric method, and
The flame atomic absorption spectrometry method used for determination and the applicable measurement range of each method.
--- Part 2.Determination of silver content flame atomic absorption spectrometry. The purpose is to specify the flame atomic absorption spectrometry method for the determination of silver content in gold-loaded carbon.
Absorption spectroscopy and applicable measurement range.
Chemical analysis method of gold-loaded carbon
Part 1.Determination of gold and silver content
1 Scope
This document describes a method for the determination of gold and silver in gold-loaded carbon.
This document is applicable to the determination of gold and silver content in gold-loaded carbon. Method 1 Fire Assay Gravimetric Method Gold Content Determination Range. 100.0 g/t~
10000.0g/t, silver content determination range. 500.0g/t~20000.0g/t; Method 2 Flame Atomic Absorption Spectrometry Gold Content Determination Range.
100.0g/t~10000.0g/t.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 17433 Basic terminology for chemical analysis of metallurgical products
YS/T 3014 Gold-loaded Carbon
3 Terms and Definitions
The terms and definitions defined in GB/T 17433 apply to this document.
4 Method 1.Determination of gold and silver content - Fire assay gravimetric method (arbitration method)
4.1 Principle
The sample is roasted, mixed and melted to obtain lead buckles of appropriate quality containing precious metals. The gold and silver are separated from the lead buckles by ash blowing.
The gold and silver particles are processed and weighed, and then the gold is separated by nitric acid, and the gold and silver contents are determined by weight.
4.2 Reagents or materials
Unless otherwise stated, only reagents of confirmed analytical grade and distilled or deionized water or water of equivalent purity were used in the tests.
4.2.1 Metallic silver. wAg ≥ 99.99%.
4.2.2 Lead foil. wPb ≥ 99.99%, thickness approximately 0.1 mm, gold content < 0.02 g/t, silver content < 0.5 g/t.
4.2.3 Sodium carbonate. industrial pure, powdered.
4.2.4 Lead oxide. technically pure, powdered, gold content < 0.02 g/t, silver content < 0.5 g/t.
4.2.5 Borax. industrial pure, powdered.
4.2.6 Silicon dioxide. industrial pure, powdered.
4.2.7 Flour.
4.2.8 Glacial acetic acid. ρ = 1.05 g/mL.
4.2.9 Nitric acid. ρ = 1.42 g/mL.
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