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GB/T 5195.14-2017: Fluorspar -- Determination of magnesium content -- Flame atomic absorption spectrometry
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| GB/T 5195.14-2017 | English | 199 |
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Fluorspar -- Determination of magnesium content -- Flame atomic absorption spectrometry
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GB/T 5195.14-2017
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Basic data | Standard ID | GB/T 5195.14-2017 (GB/T5195.14-2017) | | Description (Translated English) | Fluorspar -- Determination of magnesium content -- Flame atomic absorption spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D52 | | Classification of International Standard | 73.080 | | Word Count Estimation | 10,164 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-06-01 | | 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 | GB/T 5195.14-2017: Fluorspar -- Determination of magnesium content -- Flame atomic absorption spectrometry
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Fluorspar - Determination of magnesium content - Flame atomic absorption spectrometry
ICS 73.080
D52
National Standards of People's Republic of China
Determination of fluorite magnesium content
Flame atomic absorption spectrometry
2017-09-07 Posted
2018-06-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
GB/T 5195 is divided into 16 parts.
--- Part 1. Determination of fluorite calcium fluoride content EDTA titration and distillation - potentiometric titration;
--- Part 2. Determination of fluorite carbonate content;
--- Part 3. Fluorite 105 ℃ quality determination of the weight method;
--- Part 4. Determination of fluorite sulfide content iodometric method;
--- Part 5. Determination of total sulfur content of fluorite tube furnace combustion - potassium iodate titration;
--- Part 6. Determination of fluorite content of phosphorus spectrophotometry;
--- Part 7. Determination of zinc content of fluorite; atomic absorption spectrometry;
--- Part 8. Determination of fluorite silica content;
--- Part 9. Determination of weight loss of fluorite burning weight method;
--- Part 10. Determination of iron content of fluorite phenanthroline spectrophotometry;
--- Part 11. Determination of fluorspar content; Periodate spectrophotometry;
--- Part 12. Determination of arsenic content of fluorite; atomic fluorescence spectrometry;
--- Part 13. Determination of aluminum content of fluorite EDTA titration method;
--- Part 14. Determination of magnesium content of fluorite flame atomic absorption spectrometry;
--- Part 15. Determination of calcium, aluminum, silicon, phosphorus, sulfur, potassium, iron, barium and lead contents of fluorite; wavelength dispersive X - ray fluorescence spectrometry;
--- Part 16. Determination of fluorite silicon, aluminum, iron, potassium, magnesium and titanium content Inductively coupled plasma atomic emission spectrometry.
This section GB/T 5195 Part 14.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part is proposed by China Iron and Steel Association.
This part of the National Standardization Technical Committee Steel (SAC/TC183) centralized.
This part of the drafting unit. People's Republic of China Ningbo Exit Inspection and Quarantine, China Inspection and Certification Group Ningbo Co., Ltd., Ningbo
Economic and Technological Development Zone Boren maritime testing firm, Metallurgical Industry Information Standards Institute.
The main drafters of this section. Lin Li, Zheng Lin, Xie Jianmei, Wang Zhenxin, Liu in the United States, Yang Junping, Zhang Ying, Xu Ting, Lu Chunsheng.
Determination of fluorite magnesium content
Flame atomic absorption spectrometry
Warning --- personnel should use this part of the formal laboratory work experience. This section does not indicate all possible safety issues
question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the requirements of the relevant state laws and regulations.
1 Scope
This section GB/T 5195 specifies the method of determination of magnesium content by flame atomic absorption spectrometry.
This section applies to the determination of magnesium content in fluorite. Determination of the range (mass fraction) .0.008% ~ 0.500%.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6682 analytical laboratory water specifications and test methods
GB/T 8170 rounded repair rules and limit values of the representation and judgment
GB/T 22564 fluorite sampling and sample preparation
3 principle
Samples were hydrofluoric acid, perchloric acid, sulfuric acid decomposition, boric acid solution complex residual fluoride ions, extracted with hydrochloric acid, strontium chloride as a release agent, so that
Air - acetylene flame, atomic absorption spectrometer, the wavelength of 285.2nm measured at the absorbance of magnesium in the test solution, obtained by the standard curve method
Magnesium content.
4 reagent
Unless otherwise indicated, only the use of certified analytical reagents and secondary water GB/T 6682 or its purity equivalent to
Water.
Hydrofluoric acid, ρ = 1.13 g/mL.
4.2 perchloric acid, ρ = 1.68g/mL.
4.3 Sulfuric acid, p = 1.84 g/mL.
Hydrochloric acid, ρ = 1.19 g/mL.
4.5 hydrochloric acid solution, 1 1.
4.6 boric acid solution, 20g/L.
Weigh 10g boric acid (mass fraction greater than 99.99%), dissolved in 500mL water.
4.7 strontium chloride solution, 100g/L.
Weigh 10g strontium chloride (SrCl2 · 6H2O, excellent grade pure), dissolved in 100mL water.
4.8 mg standard stock solution, 1000 μg/mL.
Weigh 1.6582g by burning 800h 2h magnesia (mass fraction greater than 99.99%), placed in.200mL beaker, add
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