This standard specifies the method summary, reagents and materials, instruments and equipment for the determination of silicon, aluminum, iron, calcium, magnesium, sodium, potassium, phosphorus, titanium, manganese, barium, strontium, etc. in coal and coke ash using X-ray fluorescence spectroscopy. Sample preparation, test procedures, calibration, calculation of results and method precis on. This standard applies to coal and coke.