GB/T 7731.8-2008Ferrotungsten - Determination of antimony content - The tetraethylrhodamine photometrie method and inductively coupled plasma-atomic emission spectrometry (English PDF)
钨铁 锑含量的测定 罗丹明B光度法和电感耦合等离子体原子发射光谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 19, 2008
Implementation date
April 1, 2009
Scope
GB/T 7731.8-2008 is the English-translated version of 钨铁 锑含量的测定 罗丹明B光度法和电感耦合等离子体原子发射光谱法.
GB/T 7731.8-2008 is the Chinese standard "Ferrotungsten - Determination of antimony content - The tetraethylrhodamine photometrie method and inductively coupled plasma-atomic emission spectrometry".
Its scope clause reads: This section GB/T 7731 specifies the determination of Rhodamine B photometric method and inductively coupled plasma atomic emission spectrometry tungsten iron The amount of antimony.
This section applies to the determination of tungsten iron antimony content. Rhodamine B spectrophotometric measurement range (mass fraction). 0.010% - 0.060%; Inductively coupled plasma atomic emission spectrometry range (mass fraction). 0.010% to 0.15%. Its clauses include method one.
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Document preview — GB/T 7731.8-2008
National Standard of the People's Republic of China
- ICS
- 77.100
- Classification
- H 11
- Replacing
- GB/T 7731.8-1987
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method One
- 3.1 Principle
- 3.2 Reagents and materials
1 Scope
This section GB/T 7731 specifies the determination of Rhodamine B photometric method and inductively coupled plasma atomic emission spectrometry tungsten iron
The amount of antimony.
This section applies to the determination of tungsten iron antimony content. Rhodamine B spectrophotometric measurement range (mass fraction). 0.010% - 0.060%;
Inductively coupled plasma atomic emission spectrometry range (mass fraction). 0.010% to 0.15%.
2 Normative references
The following documents contain provisions which, through reference to GB/T 7731 to the present, constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 4010 alloy chemical analysis and preparation of samples
3 Method One
Rhodamine B photometric
3.1 Principle
Sample to fusion with sodium peroxide, water leaching, containing tartaric acid solution of sulfuric acid, hydrogen sulfide and antimony makes copper, antimony co-precipitation,
Separation, precipitation with sulfuric acid and nitric acid, potassium permanganate and manganese sulfate was added to make a total antimony and manganese dioxide precipitate isolated by filtration, precipitated sulfur
Acid and hydrogen peroxide dissolved in sulfuric acid so that cerium oxide, antimony after extraction with isopropyl ether, Jialuodanming B, so that antimony hair color, measured at 550nm wavelength
Absorbance.
3.2 Reagents and materials
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water.
3.2.1
sodium peroxide, solid.
3.2.2
anhydrous sodium carbonate solids.
3.2.3
tartaric, solid.
3.2.4
hydrochloric acid, rho1.19g/mL.
3.2.5
nitrate, rho1.42g/mL.
3.2.6
sulfuric acid, rho1.84g/mL.
3.2.7
ammonium hydroxide, rho0.90g/mL.
3.2.8
hydrochloric acid, 1 + 1.
3.2.9
nitric acid, 1 + 1.
3.2.10
sulfuric acid, 1 + 1.
3.2.11
sulfuric acid, 1 + 2.
3.2.12
sulfuric acid - hydrogen peroxide mixture by 100mL sulfuric acid (1 + 6) and 2mL mixing hydrogen peroxide preparation.
......
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
Cited by
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Editions of GB/T 7731.8
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7731.8-2008 | Ferrotungsten - Determination of antimony content - The tetraethylrhodamine photometrie method and inductively coupled plasma-atomic emission spectrometry | current edition | Current |
| GB/T 7731.8-1987 | Ferrotungsten - Determination of antimony content - The tetraethylrhodamine photometrie method and inductively coupled plasma-atomic emission spectrometry | previous edition | Superseded |
This page sells the current edition, GB/T 7731.8-2008. Earlier editions are listed for reference only.
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