GB/T 37673-2019 English PDF

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GB/T 37673-2019: Determination of silicon, aluminum, iron, calcium, magnesium, sodium, potassium, phosphorus, titanium, manganese, strontium and barium in coal ash - X-ray fluorescence spectrometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 37673-2019	199	Add to Cart	3 days	Determination of silicon, aluminum, iron, calcium, magnesium, sodium, potassium, phosphorus, titanium, manganese, strontium and barium in coal ash - X-ray fluorescence spectrometric method	Valid

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Basic data

Standard ID: GB/T 37673-2019 (GB/T37673-2019)
Description (Translated English): Determination of silicon, aluminum, iron, calcium, magnesium, sodium, potassium, phosphorus, titanium, manganese, strontium and barium in coal ash - X-ray fluorescence spectrometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D21
Classification of International Standard: 73.040
Word Count Estimation: 10,147
Date of Issue: 2019-06-04
Date of Implementation: 2020-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37673-2019: Determination of silicon, aluminum, iron, calcium, magnesium, sodium, potassium, phosphorus, titanium, manganese, strontium and barium in coal ash - X-ray fluorescence spectrometric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of silicon, aluminum, iron, calcium, magnesium, sodium, potassium, phosphorus, titanium, manganese, strontium and barium in coal ash--X-ray fluorescence spectrometric method ICS 73.040 D21 National Standards of People's Republic of China Silicon, aluminum, iron, calcium, magnesium, sodium, Determination of potassium, phosphorus, titanium, manganese, strontium and barium X-ray fluorescence spectrometry Published on.2019-06-04 2020-01-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Method Summary 1 4 reagents and materials 1 5 Instruments and Equipment 1 6 Sample Preparation 2 7 Test step 3 8 result calculation 3 9 Method Precision 3 10 Test report 4

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Coal Industry Association. This standard is under the jurisdiction of the National Coal Standardization Technical Committee (SAC/TC42). This standard was drafted. Coal Science and Technology Research Institute Co., Ltd. Testing Branch, Qinhuangdao Entry-Exit Inspection and Quarantine Bureau coal testing technology Center, Changsha Kaiyuan Instrument Co., Ltd. The main drafters of this standard. Mark Fu, Zhang Wei, Gong Yuli, Wen Sheng, Xing Xiuyun, Tian Hao, Zhang Qi, Chen Shiqing. Silicon, aluminum, iron, calcium, magnesium, sodium, Determination of potassium, phosphorus, titanium, manganese, strontium and barium X-ray fluorescence spectrometry

1 Scope

This standard specifies the method for determining silicon, aluminum, iron, calcium, magnesium, sodium, potassium, phosphorus, titanium, manganese, strontium and barium in coal ash by X-ray fluorescence spectrometry. Requirements, reagents and materials, equipment, sample preparation, test procedures, calculation of results, method precision and test reports. This standard applies to lignite, bituminous coal and anthracite.

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. General rules for GB/T 483 coal analysis test methods

3 method summary

The ash sample is burned to a constant weight, mixed with a binder, ground, pressed into a swatch, or melted with a flux to prepare a swatch. Sample is subject to the primary X After the radiation, the atom of the element to be tested emits X-ray fluorescence, and the X-ray fluorescence intensity of the element to be tested is measured by the detector, according to the element to be tested. Quantitative relationship between X-ray fluorescence intensity and content, using a calibration curve or an appropriate mathematical correction mode to calculate the content of the element to be tested.

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 Detector gas. The gas composition is 90% argon and 10% methane. Other components can also be used. 4.2 Strong absorbent. cerium oxide or cerium oxide, purity of 99.99% or more. 4.3 Flux. a pure grade of pure lithium or sodium borate, carbonate or a mixture thereof, such as anhydrous lithium tetraborate. 4.4 Release agent. ammonium iodide or lithium iodide. 4.5 Oxidizing agent. lithium nitrate or ammonium nitrate. 4.6 Adhesive. microcrystalline cellulose, boric acid or stearic acid.

5 instruments

5.1 Spectrometer. A wavelength dispersive X-ray fluorescence spectrometer or an energy dispersive X-ray fluorescence spectrometer with a vacuum sample chamber. 5.2 Melting furnace or fluxing equipment. The working temperature is not lower than 1000 °C. 5.3 Melting crucible. High purity graphite or platinum products, 22 mm high, 18 mm inner diameter or other larger size suitable for melting crucibles. 5.4 Tablet press. The pressure is adjustable, the maximum pressure is not less than 392kN (40t), and it is equipped with a pressure indicator. 5.5 Boric acid mold. made of hard steel, the surface of the tablet is flat and smooth, and can be pressed and formed, and the sample with high surface finish is analyzed. ......

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