GB/T 37667-2019Determination of iron,calcium,magnesium,potassium,sodium,manganese,phosphorus,aluminum,titanium,strontium and barium in coal ash—Inductively coupled plasma-atomic emission spectrometry (English PDF)
煤灰中铁、钙、镁、钾、钠、锰、磷、铝、钛、钡和锶的测定 电感耦合等离子体原子发射光谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 4, 2019
Implementation date
January 1, 2020
Scope
GB/T 37667-2019 is the English-translated version of 煤灰中铁、钙、镁、钾、钠、锰、磷、铝、钛、钡和锶的测定 电感耦合等离子体原子发射光谱法.
GB/T 37667-2019 is the Chinese standard "Determination of iron,calcium,magnesium,potassium,sodium,manganese,phosphorus,aluminum,titanium,strontium and barium in coal ash—Inductively coupled plasma-atomic emission spectrometry".
Its scope clause reads: This standard specifies the determination of iron, calcium, magnesium, potassium, sodium, manganese, phosphorus, aluminum, titanium and tantalum in coal ash by inductively coupled plasma atomic emission spectrometry.
Method summary, reagents and materials, equipment, ash preparation, test procedures, calculation and presentation of results, method precision and test report. This standard applies to coal, coke and coal gangue. Its clauses include method summary; reagents and materials.
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Document preview — GB/T 37667-2019
National Standard of the People's Republic of China
- ICS
- 73.040
- Classification
- D 21
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Method Summary
- 4 reagents and materials
- 5 instruments and equipment
- 6 Gray sample preparation
- 7 Test step
- 8 Calculation and representation of results
- 9 Method Precision
- 10 Test report
- Appendix A (Normative) Factor 7 for conversion of single elements to oxides
1 Scope
This standard specifies the determination of iron, calcium, magnesium, potassium, sodium, manganese, phosphorus, aluminum, titanium and tantalum in coal ash by inductively coupled plasma atomic emission spectrometry.
Method summary, reagents and materials, equipment, ash preparation, test procedures, calculation and presentation of results, method precision and test report.
This standard applies to coal, coke and coal gangue.
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.
GB/T 483 General rules for coal analysis test methods
3 method summary
General analysis of samples after ashing, decomposition with hydrofluoric acid and perchloric acid, determination of sample dissolution by inductively coupled plasma atomic emission spectrometry
The line intensity of each element in the liquid. Calculate the concentration of each element in the sample solution by using a standard solution as a calibration curve, and calculate the elements in the coal ash.
The content of the elemental oxide.
4 reagents and materials
Unless otherwise stated, the reagents used in this standard are of analytical grade and the water used is deionized water or distilled water of equivalent purity.
4.1 Hydrofluoric acid
Density 1.14g/mL.
4.2 Perchloric acid
density 1.67g/mL.
4.3 Hydrochloric acid
Density 1.18 g/mL.
4.4 Hydrochloric acid solution (1 1)
Add 1 volume of hydrochloric acid to 1 volume of water and shake well.
4.5 Hydrochloric acid solution (1 19)
Add 1 volume of hydrochloric acid to 19 volumes of water and shake well.
4.6 Sulfuric acid solution (50 mL/L)
Measure 5 mL of sulfuric acid (density 1.84 g/mL), slowly add water and dilute to 100 mL with water.
4.7 Iron standard stock solution (1mg/mL)
Accurately weigh high-purity ferric oxide (99.99%) 1.4286g which has been dried at 110 °C for 1h.
In a 400 mL beaker, add 40 mL of hydrochloric acid solution (1 1), cover the watch glass and slowly heat to dissolve, cool to room temperature, and transfer to 1000 mL.
In a measuring flask, dilute to the mark with water, shake well, and transfer to a plastic bottle.
4.8 Calcium standard stock solution (1mg/mL)
Accurately weigh 2.5000g of high-purity calcium carbonate (99.99%) which has been dried at 110 °C for 1h.
In a 400 mL beaker, add 50 mL of water, cover the watch glass, slowly add 20 mL of hydrochloric acid solution (1 1) along the wall of the cup, dissolve completely, and cook by heating.
Boil the carbon dioxide, rinse the surface dish and the cup with water, cool to room temperature, transfer to a 1000mL volumetric flask, dilute to the mark with water, shake well,
Transfer to a plastic bottle.
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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.
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