GB/T 4333.7-2019Ferrosilicon - Determination of sulfur content - Infrared absorption method and chromatographic separation-barium sulfate gravimetric method (English PDF)
硅铁 硫含量的测定 红外线吸收法和色层分离硫酸钡重量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 4, 2019
Implementation date
May 1, 2020
Scope
GB/T 4333.7-2019 is the English-translated version of 硅铁 硫含量的测定 红外线吸收法和色层分离硫酸钡重量法.
GB/T 4333.7-2019 is the Chinese standard "Ferrosilicon - Determination of sulfur content - Infrared absorption method and chromatographic separation-barium sulfate gravimetric method".
Its scope clause reads: This part of GB/T 4333 specifies the determination of sulfur content in ferrosilicon by chromatographic separation of barium sulfate gravimetric method and infrared absorption method.
This section applies to the determination of sulfur content in ferrosilicon. Measuring range (mass fraction). Method 1 0.005%~0.025%; Method 2 0.002%~0.030%.
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Document preview — GB/T 4333.7-2019
National Standard of the People's Republic of China
- ICS
- 77.100
- Classification
- H 11
- Replacing
- GB/T 4333.7-1984
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 part of GB/T 4333 specifies the determination of sulfur content in ferrosilicon by chromatographic separation of barium sulfate gravimetric method and infrared absorption method.
This section applies to the determination of sulfur content in ferrosilicon. Measuring range (mass fraction). Method 1 0.005%~0.025%; Method 2
0.002%~0.030%.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Preparation and preparation of GB/T 4010 ferroalloy chemical analysis sample
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) Part 1. General and definition
GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) Part 2. Determination of standard method of measurement
Basic method of sex and reproducibility
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
3 method one color layer separation barium sulfate gravimetric method
3.1 Principle
The sample was dissolved in nitric acid and hydrofluoric acid in a bromine solution, and smoked with perchloric acid, and the salt was dissolved in water and then filtered. The filtrate passes through the activated alumina color
The column was removed, most of the interfering elements were removed, the sulfate ions on the chromatography column were eluted with dilute ammonium hydroxide, and then the sulfur was determined by the barium sulfate gravimetric method.
3.2 Reagents and materials
In the analysis, unless otherwise stated, only the reagents confirmed as analytically pure are used, and the test water is the third and third grades specified in GB/T 6682.
Distilled water, deionized water or water of equivalent purity.
3.2.1
Boric acid.
3.2.2
Nitric acid, rho = 1.42 g/mL.
3.2.3
Hydrofluoric acid, rho = 1.15 g/mL.
3.2.4
Perchloric acid, rho = 1.67 g/mL.
3.2.5
Perchloric acid, 1 10.
3.2.6
Glacial acetic acid, rho = 1.05 g/mL.
3.2.7
Hydrochloric acid, 1 1.
3.2.8
Hydrochloric acid, 1 20.
......
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 4333.7
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4333.7-2019 | Ferrosilicon - Determination of sulfur content - Infrared absorption method and chromatographic separation-barium sulfate gravimetric method | current edition | Current |
| GB/T 4333.7-1984 | Ferrosilicon - Determination of sulfur content - Infrared absorption method and chromatographic separation-barium sulfate gravimetric method | previous edition | Superseded |
This page sells the current edition, GB/T 4333.7-2019. Earlier editions are listed for reference only.
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