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GB/T 7739.9-2025 English PDF

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US$249.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7739.9-2025: Methods for chemical analysis of gold concentrates - Part 9: Determination of carbon content
Status: Valid

GB/T 7739.9: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7739.9-2025	249	Add to Cart	3 days	Methods for chemical analysis of gold concentrates - Part 9: Determination of carbon content	Valid
GB/T 7739.9-2007	159	Add to Cart	3 days	Methods for chemical analysis of gold concentrates -- Part 9: Determination of carbon contents	Valid

Similar standards

GB/T 42333 GB/T 20899.1 YS/T 254.1 GB/T 7739.10 GB/T 7739.8 GB/T 7739.7

Basic data

Standard ID: GB/T 7739.9-2025 (GB/T7739.9-2025)
Description (Translated English): Methods for chemical analysis of gold concentrates - Part 9: Determination of carbon content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D46
Classification of International Standard: 73.060.99
Word Count Estimation: 12,167
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Older Standard (superseded by this standard): GB/T 7739.9-2007
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 7739.9-2025: Methods for chemical analysis of gold concentrates - Part 9: Determination of carbon content

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT7739.9-2025
ICS 73.060.99 CCSD46 National Standard of the People's Republic of China Replaces GB/T 7739.9-2007 Chemical analysis methods for gold concentrates Part 9.Determination of carbon content Released on June 30, 2025 Implementation on January 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Method 1.Non-aqueous titration 1 4.1 Principle 1 4.2 Reagents or Materials 1 4.3 Instruments and Equipment 2 4.4 Sample 3 4.5 Test Step 4 4.6 Experimental data processing 4 4.7 Precision 4 4.8 Test report 5 5 Method 2.High frequency combustion infrared absorption method 5 5.1 Principle 5 5.2 Reagents or materials 5 5.3 Instruments and Equipment 6 5.4 Sample 6 5.5 Test Step 6 5.6 Experimental data processing 7 5.7 Precision 7 5.8 Test report 7 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 9 of GB/T 7739 “Methods for chemical analysis of gold concentrates”. GB/T 7739 has published the following 13 parts. part. --- Part 1.Determination of gold and silver content; --- Part 2.Determination of silver content - Flame atomic absorption spectrometry; --- Part 3.Determination of arsenic content; --- Part 4.Determination of copper content; --- Part 5.Determination of lead content; --- Part 6.Determination of zinc content; --- Part 7.Determination of iron content; --- Part 8.Determination of sulfur content; --- Part 9.Determination of carbon content; --- Part 10.Determination of antimony content; --- Part 12.Determination of arsenic, mercury, cadmium, lead and bismuth content - Atomic fluorescence spectrometry; --- Part 13.Determination of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury content - Inductively coupled plasma atomic emission spectrometry; --- Part 14.Determination of thallium content - Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry. This document replaces GB/T 7739.9-2007 "Chemical analysis methods of gold concentrates Part 9.Determination of carbon content" and GB/T 7739.9- Compared with.2007, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Added the introduction and elimination methods of interference in non-aqueous titration method (see 4.5.3.1); b) Added high-frequency combustion infrared absorption method (see Chapter 5). 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 was 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., Shenzhen Gold, Silver and Jewelry Inspection and Quarantine Co., Ltd. Testing Research Center Co., Ltd., Changchun National Inspection (Jiyuan) Testing Technology Co., Ltd., Guotou Jincheng Metallurgical Co., Ltd., Shandong Jindu Smelting Co., Ltd., Henan Gold Industry Technology Research Institute Co., Ltd., Hunan Zhongnan Gold Smelting Co., Ltd., Yunnan Gold Mining Group Guiyang Metal Detection Co., Ltd., Jiangxi Sanhe Gold Industry Co., Ltd., Henan Northwest Yongzong Detection Technology Co., Ltd., Zhaojin Mining Co., Ltd. Jinchiling Gold Mine. The main drafters of this document are. Chen Yonghong, Yang Xing, Guan Guojun, Zhang Yue, Yang Yehao, Hong Bo, Wang Ju, Luo Xiufen, Du Yuanyuan, Zhong Yingnan, Ren Xiaosong, Liu Xia, Guo Xiao, Yang Yunguang, Chen Xiaoke, Yu Guowei, Huang Yong, Ni Ping, Shao Daochen, and Li Yanji. The previous versions of this document and the documents it replaces are as follows. ---GB/T 7739.9-2007; ---This is the first revision.

introduction

After the ore is processed by the separation operation, its main components have been enriched in the concentrate, and the secondary components of the ore or other associated metals are also GB/T 7739 "Chemical Analysis Methods of Gold Concentrates" is designed to help gold mining companies accurately understand the main components and impurities of gold concentrates. content, which is beneficial to optimize the control parameters of the smelting process, accurately control the consumption of reagents, reduce the interference of impurity elements on the smelting and purification process, and improve the The comprehensive recovery rate of valuable elements can contribute to the efficient recycling of resources, sustainable green and healthy development, and smart mines in the entire gold industry. GB/T 7739 is planned to consist of 14 parts. --- Part 1.Determination of gold and silver content. The purpose is to specify the fire assay gravimetric method, activity Carbon enrichment-flame atomic absorption spectrometry and activated carbon enrichment-iodine titration 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 concentrates. Absorption spectroscopy and applicable measurement range. --- Part 3.Determination of arsenic content. The purpose is to specify the method for determining the amount of arsenic in gold concentrate using silver diethyldithiocarbamate spectrophotometer. The titration method and potassium dichromate titration method and the applicable determination range of each method. --- Part 4.Determination of copper content. The purpose is to specify the flame atomic absorption spectrometry and thiosulfate method for the determination of copper content in gold concentrates Sodium iodine titration method and the applicable measurement range of each method. --- Part 5.Determination of lead content. The purpose is to specify the atomic absorption spectrometry and ethylenediaminetetraacetic acid method for the determination of lead content in gold concentrates Disodium titration method and the applicable determination range of each method. --- Part 6.Determination of zinc content. The purpose is to specify the atomic absorption spectrometric method and ethylenediaminetetraacetic acid method for the determination of zinc content in gold concentrates Disodium titration method and the applicable determination range of each method. --- Part 7.Determination of iron content. The purpose is to specify the potassium dichromate titration method for the determination of iron content in gold concentrate and the applicable determination method. scope. --- Part 8.Determination of sulfur content. The purpose is to specify the barium sulfate gravimetric method and combustion-acid-base titration method for the determination of sulfur content in gold concentrates and the applicable measurement range of each method. --- Part 9.Determination of carbon content. The purpose is to specify the non-aqueous titration method and high-frequency combustion infrared absorption method for the determination of carbon content in gold concentrates Method and applicable measurement range. --- Part 10.Determination of antimony content. The purpose is to specify the flame atomic absorption spectrometry and cerium sulfate drop method for the determination of antimony content in gold concentrates The determination method and the applicable measurement range of each method. --- Part 12.Determination of arsenic, mercury, cadmium, lead and bismuth content by atomic fluorescence spectrometry. Determination of lead and bismuth by hydride generation-atomic fluorescence spectrometry and its applicable determination range. --- Part 13.Determination of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury content - Inductively coupled plasma atomic emission spectrometry. Inductively coupled plasma atomic emission spectrometry for the determination of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury in specified gold concentrates and its application measurement range. --- Part 14.Determination of thallium content - Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry. Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry for the determination of thallium in gold concentrates Methods and the applicable measurement range of each method. --- Part 15.Determination of platinum group elements. The purpose is to specify the fire assay method for the determination of platinum, palladium, rhodium, iridium, osmium and ruthenium in gold concentrates. Enrichment inductively coupled plasma mass spectrometry and nickel sulfide gold assay enrichment-inductively coupled plasma mass spectrometry and their applicable determination ranges. Chemical analysis methods for gold concentrates Part 9.Determination of carbon content 1 Scope This document specifies the method for the determination of carbon content in gold concentrates. This document is applicable to the determination of carbon content in gold concentrate. Method 1 Non-aqueous titration method Determination range. 0.50%~10.00%; Method 2 High-frequency combustion Determination range of infrared absorption method. 0.020%~10.00%. 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 3 Terms and Definitions The terms and definitions defined in GB/T 17433 apply to this document. 4 Method 1.Non-aqueous titration 4.1 Principle The sample is burned in an oxygen flow at 1200℃~1250℃, using copper oxide as a co-solvent to convert carbon into carbon dioxide, and hydrogen peroxide and Active manganese dioxide is used as a desulfurizer, thymolphthalein is used as an indicator, and ethanol-ethanolamine-potassium hydroxide solution is used to absorb and titrate carbon dioxide. 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 Calcium carbonate. w ≥ 99.99%. 4.2.2 Copper oxide. powder. 4.2.3 Anhydrous ethanol. 4.2.4 Sulfuric acid. ρ = 1.84 g/mL. 4.2.5 Hydrogen peroxide. φ=30%. 4.2.6 Potassium permanganate-sodium hydroxide solution. Weigh 3.0 g of potassium permanganate and dissolve it in 100 mL of water. Add 10 g of sodium hydroxide and dissolve. Into the gas washing bottle. 4.2.7 Activated manganese dioxide slurry (1000 g/L). Weigh 50 g of activated manganese dioxide powder into a gas washing bottle and add 50 mL of distilled water. 4.2.8 Absorption solution. Potassium hydroxide standard solution [c(KOH)≈0.05mol/L]. Dissolve 30mL of ethanolamine in 970mL of anhydrous ethanol. Add 3.0 g of potassium hydroxide to the alcohol (4.2.3), and after the potassium hydroxide is completely dissolved, add 150 mg of thymolphthalein indicator, mix well, filter, and keep ......

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Answer: Upon your order, we will start to translate GB/T 7739.9-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 7739.9-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 7739.9-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 7739.9-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7739.9-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.