GB/T 5059.1-2014Ferromolybdenum - Determination of molybdenum content - Lead molybdate gravimetric method,ammonium metavanadate titration method and 8-hydroxyquinoline gravimetric method (English PDF)
钼铁 钼含量的测定 钼酸铅重量法、偏钒酸铵滴定法和8-羟基喹啉重量法
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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 5059.1-2014 is the English-translated version of 钼铁 钼含量的测定 钼酸铅重量法、偏钒酸铵滴定法和8-羟基喹啉重量法.
GB/T 5059.1-2014 is the Chinese standard "Ferromolybdenum - Determination of molybdenum content - Lead molybdate gravimetric method,ammonium metavanadate titration method and 8-hydroxyquinoline gravimetric method".
Its scope clause reads: This section GB/T 5059 specifies the gravimetric method of lead molybdate, ammonium metavanadate titration and 8-hydroxyquinoline gravimetric method for the determination of Molybdenum containing Method quantity.
This section applies to the determination of Molybdenum content. Measurement range (mass fraction). 50.00% - 75.00%.
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Document preview — GB/T 5059.1-2014
National Standard of the People's Republic of China
- ICS
- 77.100
- Classification
- H 11
- Replacing
- GB/T 5059.1-1985
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3.1 Principle
- 3.2 Reagents and materials
1 Scope
This section GB/T 5059 specifies the gravimetric method of lead molybdate, ammonium metavanadate titration and 8-hydroxyquinoline gravimetric method for the determination of Molybdenum containing
Method quantity.
This section applies to the determination of Molybdenum content. Measurement range (mass fraction). 50.00% - 75.00%.
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
Method 3 a lead molybdate gravimetric method
3.1 Principle
Sample with nitric acid, ammonium fluoride, dissolved in hydrochloric acid, if the residue is recovered with sodium hydroxide separating interfering elements such as iron, was added ethylene diamine tetra
Disodium further masking interfering elements, in acetic acid - presence of ammonium acetate, acetic acid is reacted with molybdenum lead generation lead molybdate precipitate was filtered, washed,
At 550 °C burning, in the form of lead molybdate weighed to calculate the content of molybdenum.
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
ammonium fluoride, solid.
3.2.2 mixed flux, anhydrous sodium carbonate
anhydrous potassium carbonate = 1/1.
3.2.3
hydrochloride, rho = 1.19g/mL.
3.2.4
glacial acetic acid, rho = 1.05g/mL.
3.2.5
ammonia, rho = 0.90g/mL.
3.2.6
nitrate, 23.
3.2.7
hydrochloric acid, 11.
3.2.8
sodium hydroxide solution, 500g/L.
3.2.9
ammonia, 11.
3.2.10
edetate disodium solution, 50g/L.
3.2.11
acetic acid - ammonium acetate solution, weighed 250g of ammonium acetate dissolved in 500mL of water was added 150mL glacial acetic acid (3.2.4), filtered […]
......
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 5059.1
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 5059.1-2014 | Ferromolybdenum - Determination of molybdenum content - Lead molybdate gravimetric method,ammonium metavanadate titration method and 8-hydroxyquinoline gravimetric method | current edition | Current |
| GB/T 5059.1-1985 | Ferromolybdenum - Determination of molybdenum content - Lead molybdate gravimetric method,ammonium metavanadate titration method and 8-hydroxyquinoline gravimetric method | previous edition | Superseded |
This page sells the current edition, GB/T 5059.1-2014. Earlier editions are listed for reference only.
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Related Standards
GB/T 5059.2-2014 — Ferromolybdenum—Determination of antimony content—Malachite green spectrophotometric method
GB/T 5059.2-1985 — Methods for chemical analysis of ferromolybdenum--The malachite green spectrophotometric method for the determination of antimony content
GB/T 5059.3-2014 — Ferromolybdenum - Determination of copper content - The flame atomic absorption spectrometric method
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