GB/T 3884.4: Evolution and historical versions
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| GB/T 3884.4-2025 | English | RFQ |
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Methods for chemical analysis of copper concentrates - Part 4: Determination of lead, zinc, cadmium, nickel and magnesium oxide contents - Flame atomic absorption spectrometry method
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GB/T 3884.4-2025
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| GB/T 3884.4-2012 | English | 169 |
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Methods for chemical analysis of copper concentrates -- Part 4: Determination of magnesium oxide content -- Flame atomic absorption spectrophotometry method
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GB/T 3884.4-2012
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| GB/T 3884.4-2000 | English | 199 |
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Methods for chemical analysis of copper concentrates Determination of magnesium oxide content
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GB/T 3884.4-2000
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| GB/T 3884.4-1983 | English | RFQ |
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Methods for chemical analysis of copper concentrates--The gravimetric method for the determination of sulfur content
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GB/T 3884.4-1983
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Basic data | Standard ID | GB/T 3884.4-2025 (GB/T3884.4-2025) | | Description (Translated English) | Methods for chemical analysis of copper concentrates - Part 4: Determination of lead, zinc, cadmium, nickel and magnesium oxide contents - Flame atomic absorption spectrometry method | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 3884.4-2012, GB/T 3884.6-2012 | GB/T 3884.4-2012: Methods for chemical analysis of copper concentrates -- Part 4: Determination of magnesium oxide content -- Flame atomic absorption spectrophotometry 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.
ICS77.120.60
H13
National Standards of People's Republic of China
Replacing GB/T 3884.4-2000
Methods for chemical analysis of copper concentrates
Determination of magnesium oxide content. Part 4
Flame Atomic Absorption Spectrometry
Part 4. Determinationofmagnesiumoxidecontent-
Issued on. 2013-10-01 2012-12-31 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This section is in accordance with GB/T 1.1-2009 given rules drafted.
GB/T 3884 "chemical analysis of copper concentrate" is divided into 14 parts.
--- Part 1. Determination of copper content iodometry;
--- Part 2. Determination of the amount of gold and silver by flame atomic absorption spectroscopy and fire assay;
--- Part 3. Determination of sulfur content - Gravimetric and combustion - titration;
--- Part 4. Determination of magnesium oxide content - Flame atomic absorption spectrometry;
--- Part 5. Determination of the amount of fluorine ion selective electrode method;
--- Part 6. Determination by flame atomic lead, zinc, cadmium and nickel absorption spectrometry;
--- Part 7. Determination of lead content Na2EDTA titration;
--- Part 8. Determination of zinc contents Na2EDTA titration;
--- Part 9. Determination of the amount of arsenic and bismuth hydride generation - atomic fluorescence spectrometry, potassium bromate titration and diethyl ammonia
Silver group acid spectrophotometry;
--- Part 10. Determination of antimony content hydride generation - atomic fluorescence spectrometry;
--- Part 11. Determination of mercury content - Cold atomic absorption spectrometry;
--- Part 12. Determination of the amount of fluorine and chlorine ion chromatography;
--- Part 13. Determination of the amount of copper electrolysis;
--- Part 14. Determination of the amount of gold and silver fire assay gravimetric method and atomic absorption spectrometry.
This is Part 4.
This Part replaces GB/T 3884.4-2000 "the amount of magnesium oxide copper concentrates Determination", and
GB/T 3884.4-2000 compared mainly the following changes.
--- Text format has been modified;
--- Supplementary terms of precision and test reports.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is responsible for drafting unit. Daye Nonferrous Metals Group Holdings Limited.
This section is drafted. Daye Nonferrous Metals Group Holdings Limited.
Participated in the drafting of this section. Beijing Mining Research Institute, Zhongtiaoshan Nonferrous Metals Group Co., Ltd., Kunming Institute of Metallurgy, Yanggu Xiang
Light Copper Co., Ltd., MCC Huludao Nonferrous Metals Group Co., Ltd.
The main drafters of this section. new Feng, Li Xiaoyu, Wei Wen, Jiang Tao seeking, Ma Lijun, Mei Ling Hu Jun, Wang Yongbin, Libi Xiong, Zhaode Ping,
Li Rong, Zhang, the Pengguo Chun, Gong Hai Yan, Xi Hongjie.
This part of the standard replaces the previous editions are.
--- GB/T 3884.5-1983, GB/T 3884.4-2000.
Methods for chemical analysis of copper concentrates
Determination of magnesium oxide content. Part 4
Flame Atomic Absorption Spectrometry
1 Scope
This section GB/T 3884 provides for determination of MgO content in copper concentrate.
This section applies to the determination of MgO content in copper concentrates measurement range. 0.50% - 6.00%.
2 Method summary
Samples with hydrochloric acid, nitric acid, hydrofluoric acid, perchloric acid dissolved in dilute hydrochloric acid medium, adding a certain amount of strontium chloride interference suppression elements, use
Air - acetylene flame atomic absorption spectrometer at a wavelength of 285.2nm, magnesium measured absorbance.
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 hydrochloride (11).
3.3 nitric acid (ρ = 1.42g/mL).
3.4 Hydrofluoric acid (ρ = 1.13g/mL).
3.5 perchloric acid (ρ = 1.67g/mL).
3.6 Standard magnesium solution. magnesium oxide (wMgO≥99.99%) previously burning 1h at 600 ℃, cooled to room temperature in desiccator said.
Take 0.5000g of magnesium oxide in 250mL beaker, add a small amount of wetting water, added 2mL of hydrochloric acid (3.2) dissolved completely and transferred to 500mL
Volumetric flask, dilute with water to volume, and mix. This solution 1mL 1mg containing magnesium oxide.
3.7 strontium solution. Weigh 30.43g strontium chloride (SrCl2 · 6H2O) in 250mL beaker, add 30mL water, 25mL hydrochloric acid (3.2)
Dissolved and transferred to 500mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 20mg strontium.
3.8 disodium edetate (by Na2EDTA) solution [c (Na2EDTA) = 0.10mol/L]. Weigh 18.62g ethylenediaminetetraacetic acid
Disodium (C10H14N2O8Na2 · 2H2O), placed in 250mL beaker, after adding hot water dissolved and transferred to 500mL volumetric flask, dilute with water
Diluted to volume, and mix.
4 Instrument
Atomic absorption spectrometer, with a magnesium hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. In line with the measuring solution matrix solution (burner angle 90 °), characterized by the concentration of magnesium should not exceed
0.411μg/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%;
The lowest concentration of standard solution used (instead of "zero" standard solution) absorbance measured 10 times, and the standard deviation should not exceed the highest standards
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