GB/T 5059.2-2014Ferromolybdenum—Determination of antimony content—Malachite green spectrophotometric method (English PDF)
钼铁 锑含量的测定 孔雀绿分光光度法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 27, 2014
Implementation date
January 1, 2015
Scope
GB/T 5059.2-2014 is the English-translated version of 钼铁 锑含量的测定 孔雀绿分光光度法.
GB/T 5059.2-2014 is the Chinese standard "Ferromolybdenum—Determination of antimony content—Malachite green spectrophotometric method". Its scope clause reads: GB/T 5059 provisions of this part of the malachite green spectrophotometric determination of molybdenum iron antimony content approach.
This section applies to the determination of molybdenum iron antimony content. Measurement range (mass fraction). 0.005% and 0.120%. Its clauses include reagents and materials.
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Document preview — GB/T 5059.2-2014
National Standard of the People's Republic of China
- ICS
- 77.100
- Classification
- H 11
- Replacing
- GB/T 5059.2-1985
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
1 Scope
GB/T 5059 provisions of this part of the malachite green spectrophotometric determination of molybdenum iron antimony content approach.
This section applies to the determination of molybdenum iron antimony content. Measurement range (mass fraction). 0.005% and 0.120%.
2 Normative references
The following documents for the application of this document is essential, dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 4010 alloy chemical analysis and preparation of samples
Principle 3
The sample was dissolved by nitric acid, sulfuric acid treatment white smoke, dissolved salts with hydrochloric acid, was added tin dichloride in an acidic solution, the reduction of antimony into three
Price, then with sodium nitrite oxidizing trivalent to pentavalent antimony, with the destruction of excess urea sodium nitrite added malachite green and pentavalent antimony generate green
Complexes, extracted with toluene, measured at 640nm wavelength spectrophotometer absorbance.
4 Reagents and materials
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water.
4.1
toluene.
4.2
nitric acid, 13.
4.3
hydrochloric acid, 11.
4.4
sulfuric acid, 11.
4.5
sulfuric acid, 18.
4.6
stannous chloride solution, 10g of stannous chloride dissolved in 100mL of hydrochloric acid (4.3), and mix well.
4.7
sodium nitrite solution, 100g/L.
4.8
urea solution, the urea weighed 50g, was dissolved in 50mL of water, mix, cool to room temperature.
4.9
malachite green solution, weighed 0.5g malachite green, was dissolved in 100mL (3 1) of ethanol, and mix.
4.10
Antimony standard solution.
4.10.1
Weigh 0.1000g antimony (mass fraction greater than 99.9%), was dissolved in 50mL of concentrated sulfuric acid, concentrated sulfuric acid was added 50mL cold but. Moved into the pre-filled with 600mL of water 1000mL volumetric flask, dilute with water to volume, and mix. This solution containing 1mL
0.1mg antimony.
4.10.2
Pipette 10.00mL antimony standard solution (4.10.1), placed in 500mL volumetric flask, dilute sulfuric acid (4.5) to the mark and mix.
......
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 5059.2
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 5059.2-2014 | Ferromolybdenum—Determination of antimony content—Malachite green spectrophotometric method | current edition | Current |
| GB/T 5059.2-1985 | Ferromolybdenum—Determination of antimony content—Malachite green spectrophotometric method | previous edition | Superseded |
This page sells the current edition, GB/T 5059.2-2014. Earlier editions are listed for reference only.
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Related Standards
GB/T 5059.3-2014 — Ferromolybdenum - Determination of copper content - The flame atomic absorption spectrometric method
GB/T 5059.1-1985 — Methods for chemical analysis of ferromolybdenum--The 8-hydroxyquinoline gravimetric method for the determination of molybdenum
GB/T 5059.3-1985 — Methods for chemical analysis of ferromolybdenum--The atomic absorption spectrophotometric method for the determination of copper content
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