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YS/T 461.8: Evolution and historical versions
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| YS/T 461.8-2025 | English | RFQ |
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(Methods for chemical analysis of lead and zinc bulk concentrates - Part 8: Determination of copper content - Flame atomic absorption spectrometry and iodine titration methods)
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| YS/T 461.8-2013 | English | 159 |
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Methods for chemical analysis of lead and zinc bulk concentrates0 Part 8: Determination of copper content. Flame atomic absorption spectrometry
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| YS/T 461.8-2003 | English | 239 |
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The methods for chemical analysis of lead and zinc bulk concentrates-The determination of copper content-The atomic absorption method
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Basic data
| Standard ID | YS/T 461.8-2025 (YS/T461.8-2025) |
| Description (Translated English) | (Methods for chemical analysis of lead and zinc bulk concentrates - Part 8: Determination of copper content - Flame atomic absorption spectrometry and iodine titration methods) |
| Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) |
| Classification of Chinese Standard | H13 |
| Classification of International Standard | 77.120.60 |
| Date of Issue | 2025-08-19 |
| Date of Implementation | 2026-03-01 |
| Older Standard (superseded by this standard) | YS/T 461.8-2013 |
| Issuing agency(ies) | Ministry of Industry and Information Technology |
| Summary | This standard specifies methods for determining copper content in mixed lead-zinc concentrate using both flame atomic absorption spectrometry and iodometric titration. This standard applies to the determination of copper content in mixed lead-zinc concentrate. |
YS/T 461.8-2013: Methods for chemical analysis of lead and zinc bulk concentrates0 Part 8: Determination of copper content. Flame atomic absorption spectrometry
---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.
Methods for chemical analysis of lead and zinc bulk concentrates0 Part 8. Determination of copper content Flame atomic absorption spectrometry.
ICS 77.120.60
H13
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 461.8-2003
Lead and Zinc concentrates - Methods
Part 8. Determination of copper content
Flame Atomic Absorption Spectrometry
Part 8. Determinationofcoppercontent-
Issued on. 2013-10-17
2014-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 461 "Lead and Zinc concentrates - Methods" is divided into 11 parts.
--- Part 1. Determination of the amount of lead and zinc content Na2EDTA precipitation titration;
--- Part 2. Determination of iron content Na2EDTA titration;
--- Part 3. Determination of sulfur content of combustion - neutralization titration method;
--- Part 4. Determination of arsenic content of iodine titration;
--- Part 5. Determination of silicon dioxide content - Molybdenum blue spectrophotometric method;
--- Part 6. Determination of the amount of mercury atomic fluorescence spectrometry;
--- Part 7. Determination of cadmium content by flame atomic absorption spectrometry;
--- Part 8. Determination of copper content - Flame atomic absorption spectrometry;
--- Part 9. Determination of the amount of silver by flame atomic absorption spectrometry;
--- Part 10. the amount of gold and silver contents - fire assay;
--- Part 11. arsenic, bismuth, cadmium, cobalt, copper, nickel, antimony content - Inductively Coupled Plasma - Atomic Emission Spectrometry.
This section YS/T Section 8461 of.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The partial replacement of YS/T 461.8-2003 "Lead and Zinc concentrates - Methods for chemical analysis of copper content - Flame atomic absorption spectrometric
Law, "compared with the YS/T 461.8-2003, the main changes are as follows.
--- Added "repetitive", "reproducibility" clause, delete the words "to allow poor" clause;
--- Added "the test report" requirement.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
YS/T 461 is responsible for drafting. Shenzhen Lingnan Nonferrous Metals Co., Baiyin Nonferrous Metals Group Co., Ltd.,
Beijing General Research Institute of Mining and Metallurgy.
This section is responsible for drafting unit. Baiyin Nonferrous Group Co., Ltd.
Participated in the drafting of this section. Shenzhen Lingnan Nonferrous Metals Co., Ltd. Shaoguan smelter Shenzhen Lingnan Nonferrous
Ltd. belongs Fankou, Daye Nonferrous Metals Group Holdings Limited, Western Mining Corporation xitiesan Branch,
Bayannaoer Western Copper Limited.
The main drafters of this section. Li Yulin, Lv Yanling, Sunguang Yan, Pakistan Jianrong, Lin Ye, Zhou Lanxiang, Miss Li, Wei Wen, Du Feng, Li Li,
Kong Huiming, Longhai Zhen.
This part of the standard replaces the previous editions are.
--- YS/T 461.8-2003.
Lead and Zinc concentrates - Methods
Part 8. Determination of copper content
Flame Atomic Absorption Spectrometry
1 Scope
This section YS/T 461 specifies the method for determination of lead and zinc concentrate mixed copper content.
This section applies to the determination of lead and zinc concentrate mixed copper content. Measurement range. Copper. 0.10% to 5.00%.
Principle 2
Samples with hydrochloric acid, nitric acid dissolved in dilute hydrochloric acid medium, using air - acetylene flame atomic absorption spectrometer wavelength 324.7nm
At measuring the absorbance of copper, according to the standard curve method to calculate the content of copper.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 hydrochloric acid (ρ = 1.19g/mL).
3.2 nitric acid (ρ = 1.42g/mL).
3.3 bromine.
3.4 hydrochloride (11).
3.5 nitric acid (11).
3.6 Copper Standard stock solution. Weigh 1.0000g copper (wCu≥99.99%) in 100mL beaker, add 20mL of nitric acid
(3.5), cover the surface of the pan, a hot plate at low heat to dissolve completely get rid of boiling nitrogen oxides. Remove cooling to room temperature, transferred to
1000mL volumetric flask, dilute with water to volume, and mix. This solution containing 1mg per milliliter of copper.
3.7 Copper Standard Solution. Pipette 10.00mL copper standard stock solution (3.6) in 100mL volumetric flask, was added 5mL hydrochloric acid (3.4), with
Dilute with water to volume, and mix. This solution containing 100μg per milliliter of copper.
4 Instrument
Atomic absorption spectrometer, with copper hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. a solution in the measurement matrix consistent solution features copper concentration should be less than 0.090μg/mL.
--- Precision. standard solution with the highest concentration of 10 times the absorbance measurements, the standard deviation should not exceed the average absorbance of 1.0%;
With the lowest concentration of standard solution (not "zero" concentration of the standard) measuring the absorbance of 10 times, the standard deviation should not exceed the maximum
0.5% of the average concentration of the standard solution absorbance.
--- Linear curve. The curve is divided into five sections according to concentration, absorbance difference between the absorbance difference between the highest and the lowest segment of the segment
Ratio of not less than 0.8.
