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GB/T 7731.8-2008: Ferrotungsten -- Determination of antimony content -- The tetraethylrhodamine photometric method and inductively coupled plasma-atomic emission spectrometry
Status: Valid GB/T 7731.8: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7731.8-2008 | English | 229 |
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Ferrotungsten -- Determination of antimony content -- The tetraethylrhodamine photometric method and inductively coupled plasma-atomic emission spectrometry
| Valid |
GB/T 7731.8-2008
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| GB/T 7731.8-1987 | English | 199 |
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Methods for chemical analysis of ferrotungsten--The tetraethylrhodamine photometric method for the determination of antiory content
| Obsolete |
GB/T 7731.8-1987
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PDF similar to GB/T 7731.8-2008
Basic data | Standard ID | GB/T 7731.8-2008 (GB/T7731.8-2008) | | Description (Translated English) | Ferrotungsten -- Determination of antimony content -- The tetraethylrhodamine photometric method and inductively coupled plasma-atomic emission spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H11 | | Classification of International Standard | 77.100 | | Word Count Estimation | 10,125 | | Date of Issue | 2008-08-19 | | Date of Implementation | 2009-04-01 | | Older Standard (superseded by this standard) | GB/T 7731.8-1987 | | Quoted Standard | GB/T 4010 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.14 (Total No.127) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the determination of the amount of tungsten iron antimony with rhodamine B spectrometry method and inductively coupled plasma atomic emission. This section applies to the determination of iron in tungsten and 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 %. | GB/T 7731.8-2008: Ferrotungsten -- Determination of antimony content -- The tetraethylrhodamine photometric method and inductively coupled plasma-atomic emission spectrometry
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Ferrotungsten. Determination of antimony content. The tetraethylrhodamine photometrie method and inductively coupled plasma-atomic emission spectrometry
ICS 77.100
H11
National Standards of People's Republic of China
Replacing GB/T 7731.8-1987
Determination of tungsten, antimony content of iron
Rhodamine B photometric method and inductively coupled plasma
Atomic Emission Spectrometry
Posted 2008-08-19
2009-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This section GB/T 7731 is "spectrophotometric determination of antimony content of tungsten iron chemical analysis of Rhodamine B" of the GB/T 7731.8-1987
Amendments, including two analytical methods Rhodamine B photometric method and inductively coupled plasma atomic emission spectrometry.
This Part replaces GB/T 7731.8-1987.
This portion of the GB/T 7731.8-1987 comparison, the main changes are as follows.
--- Rhodamine B photometric standard text written in a standardized format;
--- Increased by inductively coupled plasma atomic emission spectrometry.
Appendix A of this section is an informative annex.
This part is proposed by the China Iron and Steel Association.
This part of pig iron and ferroalloy by the National Standardization Technical Committee.
This section is drafted. Sinosteel Jilin Ferroalloy Co., Ltd.
The main drafters of this section. phosphorus, copper, Zhang Yunpeng, Han Yingqi, Li Cai.
This part of the standard replaces the previous editions are.
--- GB/T 7731.8-1987.
Determination of tungsten, antimony content of iron
Rhodamine B photometric method and inductively coupled plasma
Atomic Emission Spectrometry
Warning. Use of practical experience GB/T 7731 this part of the staff should have regular laboratory work. This section does not indicate all available
Energy security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
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, ρ1.19g/mL.
3.2.5 nitrate, ρ1.42g/mL.
3.2.6 sulfuric acid, ρ1.84g/mL.
3.2.7 ammonium hydroxide, ρ0.90g/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.
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