title: [Determination of 12 elements in coal ash by x-ray fluorescence spectrometry].
abstract: A method for the determination of SiO2, Al2O3, Fe2O3, CaO, SO3, TiO2, K2O, Na2O, P2O5, MgO, MnO and BaO in coal ash by X-ray fluorescence spectrometry with melt sample preparation was developed. This method solved the problems of determination accuracy of S by using the 12:22 mix flux and oxide to lower the melt temperature. Using the soil standard sample and mixing the soil standard sample and coal ash standard sample solved the problem that there are not enough standard samples for coal ash analysis by XRF. The accuracy and precision of this method are acceptable, and the results are comparable to the those obtained by wet chemical method.
authors.affiliation: Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300456, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Song
authors.forename: Fen
authors.initials: F
authors.lastname: Guo
authors.forename: Song-hai
authors.initials: SH
authors.lastname: Gu