GB/T 4324.3-2012Methods for chemical analysis of tungsten - Part 3: Determination of tin content - Hydrogenate atomic absorption spectrometry (English PDF)
钨化学分析方法 第3部分：锡量的测定 氢化物原子吸收光谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2012
Implementation date
October 1, 2013
Scope
GB/T 4324.3-2012 is the English-translated version of 钨化学分析方法 第3部分：锡量的测定 氢化物原子吸收光谱法.
GB/T 4324.3-2012 is the Chinese standard "Methods for chemical analysis of tungsten - Part 3: Determination of tin content - Hydrogenate atomic absorption spectrometry".
Its scope clause reads: GB/T 4324 provisions of this part of the tungsten powder, tungsten trioxide, tungsten, tungsten blue, purple tungsten, tungsten carbide, tungsten acid, ammonium metatungstate, ammonium paratungstate Determination of tin content.
This Part applies to tungsten powder, tungsten measure, tungsten trioxide, tungsten blue, purple tungsten, tungsten carbide, tungsten acid, ammonium metatungstate, ammonium paratungstate in tin content set.
Determination range of 0.00005% to 0.020%. Its clauses include method summary; reagents; instrument.
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Document preview — GB/T 4324.3-2012
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 63
- Replacing
- GB/T 4324.3-1984
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Method summary
- 3 Reagents
- 4 Instrument
1 Scope
GB/T 4324 provisions of this part of the tungsten powder, tungsten trioxide, tungsten, tungsten blue, purple tungsten, tungsten carbide, tungsten acid, ammonium metatungstate, ammonium paratungstate
Determination of tin content.
This Part applies to tungsten powder, tungsten measure, tungsten trioxide, tungsten blue, purple tungsten, tungsten carbide, tungsten acid, ammonium metatungstate, ammonium paratungstate in tin content set. Determination range of 0.00005% to 0.020%.
2 Method summary
Tungsten powder, tungsten, tungsten blue, fine particles of tungsten carbide, tungsten trioxide, tungstic acid, ammonium paratungstate, metatungstate hydrogen peroxide and sodium hydroxide stars
Solutions, purple tungsten, tungsten carbide coarse particles into tungsten trioxide after burning hydrogen peroxide and sodium hydroxide decomposition. Tartaric acid to adjust acidity and complex tungsten,
Phosphate solubilization by flow injection - hydride generator and atomic absorption spectrometry combined with determination of tin content.
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
Hydrogen peroxide (rho1.10g/mL).
3.2
hydrochloric acid (rho1.19g/mL), pure class distinctions.
3.3
Sodium hydroxide solution (100g/L).
3.4
tartaric acid solution (150g/L).
3.5
hydrochloric acid (19), pure class distinctions.
3.6
phosphate (11).
3.7 solution of potassium borohydride (10g/L)
Weigh 2g 0.6g potassium borohydride and sodium hydroxide dissolved in 200mL of water. The time is now equipped with.
3.8 tungsten matrix
sample should be of a similar nature, the tin content of not more than 0.00001%.
3.9 Storage tin standard solution
Weigh 0.1000g pure tin (99.95% before using scrape the surface oxide layer), placed 1000mL capacity
Flask, 200mL of hydrochloric acid (3.2), on a boiling water bath for complete dissolution and then cooled, diluted with water to the mark. This solution containing 1mL
0.1mg tin.
3.10
tin standard solution A. Pipette 20.00mL tin standard solution (3.9) in 200mL volumetric flask, dilute to the mark with hydrochloric acid (3.5),
Shake well. 1mL containing 10µg solution tin.
3.11 tin standard solution B
Pipette 20.00mL tin standard solution (3.10) in 200mL flask, diluted with hydrochloric acid (3.5) to the mark
Degree, shake. This solution 1mL containing 1µg tin.
3.12 phenolphthalein solution (10g/L)
Weigh 1g phenolphthalein dissolved in 100mL absolute ethanol.
3.13
HCl carrier (199).
4 Instrument
4.1
Atomic absorption spectrometer, with a tin hollow cathode lamp, analyze wavelength 224.6nm.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 4324.3
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4324.3-2012 | Methods for chemical analysis of tungsten - Part 3: Determination of tin content - Hydrogenate atomic absorption spectrometry | current edition | Current |
| GB/T 4324.3-1984 | Methods for chemical analysis of tungsten - Part 3: Determination of tin content - Hydrogenate atomic absorption spectrometry | previous edition | Superseded |
This page sells the current edition, GB/T 4324.3-2012. Earlier editions are listed for reference only.
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Related Standards
GB/T 4324.4-2012 — Methods for chemical analysis of tungsten - Part 4: Determination of antimony content - Hydrogenate atomic absorption spectrometry
GB/T 4324.2-1984 — Methods for chemical analysis of tungsten--The potassium iodide-brucine photometric method for the determination of bismuth content
GB/T 4324.4-1984 — Methods for chemical analysis of tungsten--The malachite green photometric method for the determination of antimony content
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