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GB/T 8151.12-2012: Methods for chemical analysis of zinc concentrates -- Part 12: Determination of sliver content -- The flame atomic absorption spectrometric method
Status: Valid GB/T 8151.12: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8151.12-2012 | English | 139 |
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Methods for chemical analysis of zinc concentrates -- Part 12: Determination of sliver content -- The flame atomic absorption spectrometric method
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GB/T 8151.12-2012
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| GB/T 8151.12-2000 | English | 199 |
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Methods for chemical analysis of zinc concentrates -Determination of silver content
| Obsolete |
GB/T 8151.12-2000
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| GB/T 8151.12-1989 | English | RFQ |
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Methods for chemical analysis of zinc concentrates--Zinc concentrates--Determination of silver content--Flame atomic absorption spectrophotometric method
| Obsolete |
GB/T 8151.12-1989
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PDF similar to GB/T 8151.12-2012
Basic data | Standard ID | GB/T 8151.12-2012 (GB/T8151.12-2012) | | Description (Translated English) | Methods for chemical analysis of zinc concentrates -- Part 12: Determination of sliver content -- The flame atomic absorption spectrometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.60 | | Word Count Estimation | 6,664 | | Older Standard (superseded by this standard) | GB/T 8151.12-2000 | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the zinc concentrate Determination of silver content. This section applies to zinc concentrates of silver content. Measuring range: 20 g/t ~ 1 000 g/t. | GB/T 8151.12-2012: Methods for chemical analysis of zinc concentrates -- Part 12: Determination of sliver content -- The flame atomic absorption spectrometric method
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ICS77.120.60
H13
National Standards of People's Republic of China
Replacing GB/T 8151.12-2000
Methods for chemical analysis of zinc concentrates
Part 12. Determination of silver content
Flame Atomic Absorption Spectrometry
Part 12. Determinationofslivercontent-
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
GB/T 8151 "Methods for chemical analysis of zinc concentrates" is divided into 20 parts.
--- Part 1. Determination of the amount of zinc Na2EDTA precipitation titration and extraction separation Na2EDTA titration;
--- Part 2. Determination of sulfur content - Combustion neutralization titration method;
--- Part 3. Determination of iron content Na2EDTA titration;
--- Part 4. Determination of silicon dioxide content - Molybdenum blue spectrophotometric method;
--- Part 5. Determination of lead content by flame atomic absorption spectrometry;
--- Part 6. Determination of copper content - Flame atomic absorption spectrometry;
--- Part 7. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry and potassium bromate titration;
--- Part 8. Determination of cadmium content by flame atomic absorption spectrometry;
--- Part 9. Determination of the amount of fluorine ion selective electrode method;
--- Part 10. Determination of tin content by hydride generation - atomic fluorescence spectrometry;
--- Part 11. Determination of antimony content hydride generation - atomic fluorescence spectrometry;
--- Part 12. Determination of the amount of silver by flame atomic absorption spectrometry;
--- Part 13. Determination of the amount of germanium hydride generation - atomic fluorescence spectroscopy and spectrophotometry Phenylfuoron;
--- Part 14. Determination of nickel content by flame atomic absorption spectrometry;
--- Part 15. Determination of the amount of mercury atomic fluorescence spectrometry;
--- Part 16. Determination of cobalt content by flame atomic absorption spectrometry;
--- Part 17. Determination of the amount of zinc hydroxide precipitation -Na2EDTA titration;
--- Part 18. Determination of the amount of zinc ion exchange -Na2EDTA titration;
--- Part 19. Determination of the amount of gold and silver gray Chuihuo lead analysis or assay and flame atomic absorption spectrometry;
--- Part 20. Copper, lead, iron, arsenic, cadmium, antimony, calcium, magnesium content - Inductively coupled plasma atomic emission spectrometry.
This is Part 12 GB/T 8151's.
Rules in this section in accordance with GB/T 1.1-2009 given draft.
This section arbitration.
This Part replaces GB/T 8151.12-2000 "Methods for chemical analysis of zinc concentrates - Determination of silver content." And GB/T 8151.12-
Compared to 2000, the main changes are as follows.
--- Text format has been modified;
--- Added 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. MCC Huludao Nonferrous Metals Group Co., Ltd.
This section is drafted. Shuikoushan Hunan Nonferrous Metals Group Co., Ltd., Beijing Mining Research Institute, set MCC Huludao Nonferrous Metals
Group Limited.
Participated in the drafting of this section. In the mountains of Nonferrous Metals Group Co., Bayannaoer Zijin Nonferrous Metals Corporation, Tongling Nonferrous Metals
Metals Group Holdings Limited.
The main drafters of this section. Zeng Guangming, Tan Qian, Wang Haoying, Dian Chen Geng, Gong Hai Yan, Li Jie, Ma Lijun, Qin Yuying, YU, Wang,
With Zhao, Fan Zhanfang.
This part of the standard replaces the previous editions are.
--- GB/T 8151.12-1987, GB/T 8151.12-2000.
Methods for chemical analysis of zinc concentrates
Part 12. Determination of silver content
Flame Atomic Absorption Spectrometry
1 Scope
This section GB/T 8151 provisions of the determination of the amount of silver in the zinc concentrate.
This section applies to the determination of zinc concentrates - Determination of silver content range.. 20g/t ~ 1000g/t.
2 Method summary
Samples with hydrochloric acid, nitric acid dissolved in dilute hydrochloric acid medium, atomic absorption spectrometer at a wavelength of 328.1nm, air - acetylene flame,
Measuring the absorbance of silver.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical reagent and distilled or deionized water or equivalent purity.
3.1 hydrochloric acid (ρ1.19g/mL), pure class distinctions.
3.2 nitrate (ρ1.42g/mL), pure class distinctions.
3.3 hydrochloride (11).
3.4 nitric acid (11).
3.5 silver standard stock solution. Weigh 0.5000g metallic silver (wAg≥99.99%) in 100mL beaker, add 20mL of nitric acid
(3.4), heat gently to dissolve completely, boiled to remove nitrogen oxides, cooled to room temperature, transferred to 1000mL volumetric flask, 20mL of nitric acid was added
(3.4), with no chlorine ions is diluted with water to volume, and mix. This solution 1mL containing 0.5mg silver.
3.6 Silver standard solution. Pipette 5.00mL standard silver stock solution (3.5) in 100mL volumetric flask, was added 4mL of nitric acid (3.4), with
Dilution water does not contain chlorine ions to the mark, and mix. This solution 1mL containing 25μg silver.
4 Instrument
Atomic absorption spectrometer and Silver hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. in the matrix solution consistent with the measurement sample solution is characterized in silver concentration should not exceed 0.06μg/mL;
--- Precision. with the highest concentration of the standard solution absorbance measured 10 times, and the standard deviation shall not exceed 1.50% of the average absorbance;
The lowest concentration of standard solution used (instead of "zero" concentration of the standard solution) absorbance measured 10 times, and the standard deviation should not exceed the maximum
0.50% Average high 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 0.7.
5 Sample
5.1 Samples should sift through the 0.100mm hole.
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