BS ISO 13605:2018

This standard BS ISO 13605:2018 Solid mineral fuels. Major and minor elements in coal ash and coke ash. Wavelength dispersive x-ray fluorescence spectrometric method is classified in these ICS categories:

• 73.040 Coals
• 75.160.10 Solid fuels

This document sets out a wavelength dispersive X-ray fluorescence (XRF) procedure for the determination of silicon, aluminium, iron, calcium, magnesium, sodium, potassium, titanium, manganese, phosphorus and sulfur.

The method is applicable to coal ashes, coke ashes and boiler ashes having components within the concentration ranges specified in Table 1.

Table 1

Ranges of application of the method

Oxide	Concentration range %
SiO2	5 to 100
Al2O3	5 to 80
Fe2O3	0,1 to 25
CaO	0,05 to 25
MgO	0,05 to 25
Na2O	0,05 to 5
K2O	0,05 to 5
TiO2	0,05 to 5
Mn3O4	0,005 to 5
P2O5a	0,01 to 5
SO3	0,05 to 10

NOTE 1 Additional analytes can be included in the method, provided that appropriate validation using reference materials is carried out.

NOTE 2 The precision statistics can be determined using suitable reference materials.

NOTE 3 The method described in this document has been tested for the following additional analytes: BaO (0,01 % to 1 %); SrO (0,01 % to 1 %) and ZnO (0,005 % to 1 %).

^a For information relating to phosphorus calculations, refer to Annex D.