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

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.

5 instruments