GB/T 3286.7-2014Methods for chemical analysis of limestone and dolomite - Part 7: The determination of sulphur content - The pipe furnace combustion iodic acid potassium titration method, the high frequency combustion with infrared absorption method and the barium sulfate gravimetric method (English PDF)
石灰石及白云石化学分析方法 第7部分：硫含量的测定 管式炉燃烧-碘酸钾滴定法、高频燃烧红外吸收法和硫酸钡重量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 30, 2014
Implementation date
May 1, 2015
Scope
GB/T 3286.7-2014 is the English-translated version of 石灰石及白云石化学分析方法 第7部分：硫含量的测定 管式炉燃烧-碘酸钾滴定法、高频燃烧红外吸收法和硫酸钡重量法.
GB/T 3286.7-2014 is the Chinese standard "Methods for chemical analysis of limestone and dolomite - Part 7: The determination of sulphur content - The pipe furnace combustion iodic acid potassium titration method, the high frequency combustion with infrared absorption method and the barium sulfate gravimetric method".
Its scope clause reads: This section GB/T 3286 specifies the tube furnace combustion - potassium iodate titration method, high-frequency combustion infrared absorption method and barium sulfate gravimetric method for measuring Sulphur content.
This section applies to limestone and dolomite - The determination of sulfur content, and determination of metallurgical lime sulfur content.
Tube furnace combustion - potassium iodate Titration and high frequency combustion infrared absorption method for the determination range (mass fraction) of 0.01% to 0.5%; barium sulfate gravimetric method for the determination of the scope of (mass fraction Number) a sulfur content greater than or equal to 0.10%; Appendix B tube furnace combustion - Iodine titration range (mass fraction) is a sulfur content of not less than 0.01%. Its clauses include furnace combustion - potassium iodate titration method.
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Document preview — GB/T 3286.7-2014
National Standard of the People's Republic of China
- ICS
- 73.080
- Classification
- D 52
- Replacing
- GB/T 3286.7-1998
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Introduction
- 1 Scope
- 2 Normative references
- 3 furnace combustion - potassium iodate titration method
- 4 7 frequency combustion infrared absorption method
- 5 9 barium sulfate gravimetric method
- 6 12 test reports
- Annex C (informative) high frequency induction infrared carbon and sulfur analyzer
- Annex D (informative) function formula and precision of the original data
1 Scope
This section GB/T 3286 specifies the tube furnace combustion - potassium iodate titration method, high-frequency combustion infrared absorption method and barium sulfate gravimetric method for measuring
Sulphur content.
This section applies to limestone and dolomite - The determination of sulfur content, and determination of metallurgical lime sulfur content. Tube furnace combustion - potassium iodate
Titration and high frequency combustion infrared absorption method for the determination range (mass fraction) of 0.01% to 0.5%; barium sulfate gravimetric method for the determination of the scope of (mass fraction
Number) a sulfur content greater than or equal to 0.10%; Appendix B tube furnace combustion - Iodine titration range (mass fraction) is a sulfur content of not less than
0.01%.
2 Normative references
The following documents for the application of this document is essential. For 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 2007.2 bulk minerals sampling and sample preparation General manual sample preparation method
GB/T 3286.8 limestone and dolomite Chemical analysis methods - Part 8. Determination of the weight loss on ignition
GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement repeatability
And basic methods of reproduction
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 8170 repair value expressed about the rules and limit values and judgment
3 furnace combustion - potassium iodate titration method
3.1 Principle
Sample mixed with tungsten trioxide, at 1275 °C ± 25 °C combustion heated in a nitrogen stream, all of the sulfur in a sample is converted to sulfur dioxide,
Acidic potassium iodide - starch solution absorption titration with potassium iodate standard solution titration.
3.2 Reagents and materials
3.2.1 Description
Analysis Unless otherwise stated, use only reagents of recognized analytical grade and third grade GB/T 6682 specified above or pure distilled water
Considerable degree water.
3.2.2 Nitrogen
Nitrogen than 99.5% purity.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 3286.7
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 3286.7-2014 | Methods for chemical analysis of limestone and dolomite - Part 7: The determination of sulphur content - The pipe furnace combustion iodic acid potassium titration method, the high frequency combustion with infrared absorption method and the barium sulfate gravimetric method | current edition | Current |
| GB/T 3286.7-1998 | Methods for chemical analysis of limestone and dolomite - Part 7: The determination of sulphur content - The pipe furnace combustion iodic acid potassium titration method, the high frequency combustion with infrared absorption method and the barium sulfate gravimetric method | previous edition | Superseded |
This page sells the current edition, GB/T 3286.7-2014. Earlier editions are listed for reference only.
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Related Standards
GB/T 3286.8-2014 — Method for chemical analysis of limestone and dolomite—Part 8: The determination of loss on ignition—The gravimetric method
GB/T 3286.6-2014 — Methods for chemical analysis of limestone and dolomite—Part 6: The determination of phosphorus content—The phosphomolybdate blue spectrophotometric method
GB/T 3286.9-2014 — Method for chemical analysis of limestone and dolomite—Part 9: The determination of carbon dioxide content—The caustic asbestos absorption gravimetric method
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