GB/T 8654.1-2007Manganese metal, ferromanganese - silicon, ferromanganese and nitrogen - bearing ferromanganese - Determination of iron content - The ortho - phenanthrdine spectrophotometric method and the titanium trichloride - potassium dichromate titrimetric method (English PDF)
金属锰、锰硅合金、锰铁和氮化锰铁 铁含量的测定 邻二氮杂菲分光光度法和三氯化钛 - 重铬酸钾滴定法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 11, 2007
Implementation date
February 1, 2008
Scope
GB/T 8654.1-2007 is the English-translated version of 金属锰、锰硅合金、锰铁和氮化锰铁 铁含量的测定 邻二氮杂菲分光光度法和三氯化钛 - 重铬酸钾滴定法.
GB/T 8654.1-2007 gives two ways of determining the iron content of manganese metal, silicon-manganese alloy, ferromanganese and nitrogen-bearing ferromanganese.
The o-phenanthroline spectrophotometric method is for iron in manganese metal over a mass fraction of 0.001% to 1.00%: the sample is decomposed in hydrochloric acid, the pH is adjusted, hydroxylamine hydrochloride and a phenanthroline solution are added to develop the colour and the absorbance is read at 517 nm.
The titanium trichloride and potassium dichromate titrimetric method is for iron in manganese metal, silicon-manganese alloy, ferromanganese and nitrogen-bearing ferromanganese over a mass fraction of 1.00% to 35.00%.
Sampling and sample preparation follow GB/T 4010, with the specimen passing a 0.149 mm sieve. It replaces GB/T 8654.1-1988 and GB/T 8654.2-1988, was issued on 11 September 2007 and has applied since 1 February 2008.
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Document preview — GB/T 8654.1-2007
National Standard of the People's Republic of China
- ICS
- 77.100
- Classification
- H 11
- Replacing
- GB/T 8654.2-1988
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Method One. phenanthroline spectrophotometry
Foreword
GB/T 8654 This section includes the phenanthroline spectrophotometric method and the titanium trichloride - potassium dichromate titration Determination of two metal manganese, Silicon manganese alloys, manganese and ferromanganese analysis of iron content.
This Part replaces GB/T 8654.1-1988 "Methods for chemical analysis of manganese metal phenanthroline spectrophotometric determination of the amount of iron" and GB/T 8654.2-1988 "Methods for chemical analysis of manganese metal - The titanium trichloride - potassium dichromate volumetric method for the determination of iron content." This portion of the GB/T 8654.1-1988 and GB/T 8654.2-1988 comparison, the main changes are as follows.
--- Methods to extend the scope of the metal manganese metal manganese, silicon manganese alloys, manganese and ferromanganese;
--- Increased silicon manganese alloys, manganese and ferromanganese sample decomposition method;
--- Adjusted by the spectrophotometric measurement range from 0.001% to 0.31% and titration 1.00% to 5.00% of the spectrophotometry 0.001% to 1.00% and 1.00% titration ~ 35.00%;
--- Manganese metal sample size by 0.177mm 0.149mm sieve adjustments made through the sieve.
1 Scope
GB/T 8654 This section provides the use phenanthroline spectrophotometric method and the titanium trichloride - Determination of manganese metal, manganese dichromate method Silicon alloys, manganese and ferromanganese iron content.
This section applies to the metal manganese, silicon manganese alloys, manganese and ferromanganese nitride determination of iron content. Wherein phenanthroline spectrophotometric method adapted Determination of manganese metal for iron content measurement range (mass fraction). 0.001% to 1.00%; titanium trichloride - potassium dichromate titration method applicable In manganese metal, silicon manganese alloys, manganese and ferromanganese nitride Determination of iron content measurement range (mass fraction). 1.00% - 35.00%.
2 Normative references
The following documents contain provisions by GB/T 8654 this part of reference in terms of this section. For dated references Documents, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Research into whether the parties to the 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. phenanthroline spectrophotometry
3.1 Principle
Sample decomposition with hydrochloric acid to adjust the pH value was added hydroxylamine hydrochloride solution was added phenanthroline iron color, wavelength spectrophotometer Absorbance is measured at 517nm.
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 Hydrochloric acid, 1 + 1.
3.2.2 Hydrochloric acid, 50 + 1.
3.2.3 Ammonium acetate solution, 500g/L.
3.2.4 Hydroxylamine hydrochloride solution, 100g/L.
3.2.5 phenanthroline solution. Weigh 0.36g phenanthroline hydrochloride (C12H8N2HCl · H2O) were dissolved in 100mL of water.
3.2.6 Iron standard solution
3.2.6.1 0.5000g said high purity iron powder (purity not less than 99.9%) were placed in 300mL beaker, add 30mL of hydrochloric acid (3.2.1), plus Thermal decomposition, after cooling transferred to 500mL volumetric flask, dilute with water to volume, and mix. This solution 1mL iron 1.0mg.
3.2.6.2 Pipette 25.00mL iron standard solution (3.2.6.1) in 1000mL volumetric flask, add 20mL hydrochloric acid (3.2.1), washed with water Dilute to volume, and mix. This solution 1mL iron 25µg.
3.3 Instrument
Analysis using common laboratory instruments.
3.4 Sampling and Preparation
In accordance with the provisions of GB/T 4010 will be sampling and sample preparation. Specimens shall be by 0.149mm sieve.
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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
Normative references
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Editions of GB/T 8654.1
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 8654.1-2007 | Manganese metal, ferromanganese - silicon, ferromanganese and nitrogen - bearing ferromanganese - Determination of iron content - The ortho - phenanthrdine spectrophotometric method and the titanium trichloride - potassium dichromate titrimetric method | current edition | Current |
| GB/T 8654.2-1988 | Manganese metal, ferromanganese - silicon, ferromanganese and nitrogen - bearing ferromanganese - Determination of iron content - The ortho - phenanthrdine spectrophotometric method and the titanium trichloride - potassium dichromate titrimetric method | previous edition | Superseded |
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Related Standards
GB/T 4010-1994 — Ferroalloys-sampling and preparation of samples for chemical analysis
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GB/T 8654.6-1988 — Methods for chemical analysis of manganese metal. The diamine hydrochloride-iodo-metric method for the determination of selenium content
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