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GB/T 4324.20-2012: Methods for chemical analysis of tungsten -- Part 20: Determination of vanadium content -- Inductively coupled plasma atomic emission spectrometry
Status: Valid GB/T 4324.20: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4324.20-2012 | English | 189 |
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Methods for chemical analysis of tungsten -- Part 20: Determination of vanadium content -- Inductively coupled plasma atomic emission spectrometry
| Valid |
GB/T 4324.20-2012
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| GB/T 4324.20-1984 | English | 199 |
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Methods for chemical analysis of tungsten--The N-benzoyl-N-phenylhydroxylamine photometric method for the determination of vanadium content
| Obsolete |
GB/T 4324.20-1984
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Basic data | Standard ID | GB/T 4324.20-2012 (GB/T4324.20-2012) | | Description (Translated English) | Methods for chemical analysis of tungsten -- Part 20: Determination of vanadium content -- Inductively coupled plasma atomic emission spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H63 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 8,871 | | Older Standard (superseded by this standard) | GB/T 4324.20-1984 | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | Issuing agency(ies) | General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 tungsten powder, tungsten, tungsten carbide, tungsten trioxide, tungsten blue, purple tungsten, ammonium metatungstate paratungstate Determination of vanadium content. This section applies to tungsten powder, tungsten, tungsten | GB/T 4324.20-2012: Methods for chemical analysis of tungsten -- Part 20: Determination of vanadium content -- Inductively coupled plasma atomic emission 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 tungsten Part 20. Determination of vanadium content Inductively coupled plasma atomic emission spectrometry
ICS 77.120.99
H63
National Standards of People's Republic of China
Replacing GB/T 4324.20-1984
Chemical analysis of tungsten
Part 20. Determination of vanadium content
Inductively coupled plasma atomic emission spectrometry
Part 20. Determinationofvanadiumcontent-
Issued on. 2012-12-31
2013-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 4324 "chemical analysis of tungsten" is divided into 28 parts.
--- Part 1. Determination of lead content - flame atomic absorption spectrometry;
--- Part 2. Determination of bismuth content hydride generation atomic absorption spectrometry;
--- Part 3. Determination of tin content hydride generation atomic absorption spectrometry;
--- Part 4. Determination of antimony content hydride generation atomic absorption spectrometry;
--- Part 5. Determination of arsenic content by hydride generation atomic absorption spectrometry;
--- Part 6. Determination of iron content of phenanthroline spectrophotometry;
--- Part 7. Determination of cobalt content by inductively coupled plasma atomic emission spectrometry
--- Part 8. Determination of the amount of nickel by inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry Diacetyldioxime
Gravimetric method;
--- Part 9. Determination of cadmium content by inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry;
--- Part 10. Determination of copper content - Flame atomic absorption spectrometry;
--- Part 11. Determination of aluminum content by inductively coupled plasma atomic emission spectrometry;
--- Part 12. Determination of the amount of silicon tetrachloride - molybdenum blue spectrophotometric method;
--- Part 13. Inductively coupled plasma calcium atomic emission spectrometry;
--- Part 14. Chlorinated Volatile residue amount after Gravimetric method;
--- Part 15. Determination of magnesium content - Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry;
--- Part 16. Determination of loss on ignition - Gravimetric method;
--- Part 17. Determination of sodium content by flame atomic absorption spectrometry;
--- Part 18. Determination of potassium content by flame atomic absorption spectrometry;
--- Part 19. Determination of titanium content of two methane antipyrine spectrophotometry;
--- Part 20. vanadium content - Inductively coupled plasma atomic emission spectrometry;
--- Part 21. Determination of chromium content by inductively coupled plasma atomic emission spectrometry;
--- Part 22. manganese content - Inductively coupled plasma atomic emission spectrometry;
--- Part 23. Determination of sulfur content of combustion conductance method and frequency combustion infrared absorption method;
--- Part 24. Determination of phosphorus content - Molybdenum blue spectrophotometric method;
--- Part 25. Determination of oxygen pulse heating inert gas fusion - infrared absorption method;
--- Part 26. Determination of nitrogen pulse heating inert gas fusion - thermal conductivity method and Nessler reagent spectrophotometric method;
--- Part 27. Determination of carbon content in the high-frequency combustion infrared absorption method;
--- Part 28. Determination of molybdenum content - Thiocyanate spectrophotometric method.
This section GB/T Part of 204,324.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 4324.20-1984 "chemical analysis of tungsten, tantalum reagent spectrophotometric determination of vanadium content." This portion
GB/T 4324.20-1984 compared to the main changes are as follows.
--- Use Inductively Coupled Plasma Atomic Emission Spectrometry vanadium content;
--- Criteria applicable to the determination of sample types increased tungsten carbide, tungsten blue, ammonium paratungstate;
--- Measurement range to 0.0002% to 0.01%.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is drafted. Beijing Nonferrous Metal Research Institute, General Research Institute for Nonferrous Metals, Guangzhou, Xiamen Golden Egret Special Materials Co., Ltd.
The main drafters of this section. Li Na, Chen Caixia, Zhang Zhuo, Zhuang Yichun, Wang Jin, Xiong Xiaoyan, Zhang Shubin, Zhuang Yingying.
This part of the alternative criteria previously issued as follows.
--- GB/T 4324.20-1984.
Chemical analysis of tungsten
Part 20. Determination of vanadium content
Inductively coupled plasma atomic emission spectrometry
1 Scope
GB/T 4324 provisions of this part of the tungsten powder, tungsten, tungsten carbide, tungsten trioxide, tungsten blue, purple tungsten, ammonium metatungstate, ammonium paratungstate vanadium content
Measurement method.
This Part applies to tungsten powder, tungsten, tungsten carbide, tungsten trioxide, tungsten blue, purple tungsten, ammonium paratungstate, the determination of vanadium in the amount of ammonium paratungstate. Determine
In the range of 0.0002% to 0.01%.
2 Method summary
Sample with hydrogen peroxide, ammonia dissolved in hydrochloric acid precipitation separation matrix. Inductively coupled plasma atomic emission spectroscopy to recommend
Measurement test solution of vanadium emission intensity at the wavelength of analytical line, obtained from the working curve method concentration of vanadium, mass fraction expressed determination
result.
3 Reagents and materials
Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents and distilled or deionized water or equivalent purity.
3.1 Hydrogen peroxide (ρ = 1.10g/mL).
Aqueous ammonia 3.2 (ρ = 0.90g/mL), MOS level.
3.3 hydrochloric acid (ρ = 1.19g/mL).
3.4 hydrochloric acid (119).
3.5 V standard stock solution. Weigh accurately 0.1785g vanadium pentoxide [w (V2O5) > 99.9%], sodium hydroxide solution was added 2mL
(200g/L), heated until completely dissolved. Sulfuric acid was added 10mL (13) acidified dropwise a few drops of nitric acid (ρ = 1.14g/mL) and evaporated to take
White smoke, remove it. Coolish, rinse the surface with a little water dish and cup wall, take fuming sulfuric acid again, the drive to make nitric acid. Coolish, transferred to 100mL volumetric flask
The diluted with water to volume, and mix. This solution 1mL containing 1mg vanadium.
3.6 vanadium standard solution A. Pipette 10.00mL vanadium standard stock solution (3.5), placed in 100mL flask, add 5mL hydrochloric acid
(3.3), dilute to the mark and mix. This solution 1mL containing 100μg vanadium.
3.7 vanadium standard solution B. Pipette 10.00mL vanadium standard solution (3.6), placed in 100mL volumetric flask, was added 5mL hydrochloric acid (3.3),
Diluted with water to volume, and mix. This solution 1mL containing 10μg vanadium.
4 Instrument
4.1 Inductively coupled plasma spectrometer with a resolution of < 0.006nm (200nm office).
4.2 Recommended vanadium analytical line wavelength 292.401nm.
The detection limit is 4.3 V 0.016μg/mL, measured limit of 0.080μg/mL.
The maximum concentration of a solution of 4.4 V continuous measurement of five times the relative standard deviation of the absolute intensity of the emitted light should be less than 1%.
4.5 linear curve, the correlation coefficient greater than 0.999.
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