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SN/T 4767-2017: Determination of copper content in the copper concentrates and copper ores by potentiometric titration method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 4767-2017 | English | 139 |
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Determination of copper content in the copper concentrates and copper ores by potentiometric titration method
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SN/T 4767-2017
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Basic data | Standard ID | SN/T 4767-2017 (SN/T4767-2017) | | Description (Translated English) | Determination of copper content in the copper concentrates and copper ores by potentiometric titration method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | H13 | | Word Count Estimation | 6,643 | | Date of Issue | 2017-05-12 | | Date of Implementation | 2017-12-01 | | Regulation (derived from) | State-Quality-Inspection-Accreditation (2017) 228 | | Issuing agency(ies) | General Administration of Customs | SN/T 4767-2017: Determination of copper content in the copper concentrates and copper ores by potentiometric titration method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Determination of copper content in silver and copper concentrates - Automatic potentiometric titration)
People's Republic of China entry and exit inspection and quarantine industry standards
Determination of copper content in copper ore and copper concentrates
Automatic potentiometric titration
Released on.2017-05-12
2017-12-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Entry-Exit Inspection and Quarantine
Industry Standard
Determination of copper content in copper ore and copper concentrates
Automatic potentiometric titration
China Standard Press Publishing
First edition, April.2018
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted. Xinjiang Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Fujian Entry and Exit Inspection of the People's Republic of China
Epidemic situation.
The main drafters of this standard. Lu Xinming, Sun Chunxiao, Wang Dong, Tian Yanhe, He Xiujuan, Zhong Jianhai, Guan Qi, Pan Cunyan.
Determination of copper content in copper ore and copper concentrates
Automatic potentiometric titration
1 Scope
This standard specifies the potentiometric titration method for the determination of copper in imported copper concentrates and copper ore.
This standard is applicable to the determination of copper content in copper concentrates and copper ore, and the measurement range is from 1.00% to 40.0%.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T.2007.1 Bulk mineral products sampling, sample preparation, manual sample preparation method
GB/T 6682 Specifications and experimental methods for experimental water (GB/T 6682-2008, ISO 3696.1987, MOD)
JJF814 automatic potentiometric titrator
3 method summary
After the sample is decomposed by hydrochloric acid and nitric acid, the pH of the solution is adjusted to 3.0-4.0 with ammonia water and acetic acid solution, and the iron is masked with ammonium hydrogen fluoride.
The potassium iodide reacted with divalent copper, and the precipitated iodine was titrated with a sodium thiosulfate standard solution, and the potential jump end was determined by an automatic potentiometric titrator.
4 instruments
4.1 Potentiometric titrator. With titration unit and titration control device, equipped with redox electrode. Comply with JJF814 automatic potentiometric titrator
Quantity procedure. Refer to Appendix A for instrument operating parameters.
4.2 Analytical balance. The sensitivity is 0.1 mg.
5 reagents and materials
Unless otherwise stated, the reagents used were of analytical grade and the water was secondary water as specified in GB/T 6682.
5.1 Hydrochloric acid (ρ=1.19g/mL).
5.2 Nitric acid (ρ = 1.42 g/mL).
5.3 Ammonia (1 1).
5.4 Glacial acetic acid (1 1).
5.5 Perchloric acid (ρ = 1.67 g/mL).
5.6 Potassium iodide.
5.7 Saturated Bromine Water.
5.8 Ammonium hydrogen fluoride.
5.9 sodium thiosulfate.
5.10 Anhydrous sodium carbonate.
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