Standards Development

Scope

WARNING — Use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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 mass fraction ranges specified in Table 1.

Table 1 — Ranges of application of the method

Oxide Mass fraction 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 a For information relating to phosphorus calculations, refer to Annex D. NOTE 1NOTE 1 Additional analytes can be included in the method, provided that appropriate validation using reference materials is carried out. NOTE 2NOTE 2 The precision statistics can be determined using suitable reference materials. NOTE 3NOTE 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 %).