RT Journal Article
T1 Assessment of the quantitative accuracy of Rietveld/XRD analysis of crystalline and amorphous phases in fly ash
A1 Zhao, Piqi
A1 Liu, Xianping
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 Lu, Lingchao
A1 Sobolev, Konstantin
K1 Rayos X - Difracción
AB An internal standard method based on Rietveld/XRD whole-pattern fitting analysis of fly ash is used to assessthe quantitative accuracy to determine its crystalline and amorphous phases under various conditions suchas internal standards (types, SiO2 or Al2O3 and dosages, 10–50%), incident X-rays (laboratory orsynchrotron) and refinement software (GSAS or TOPAS). The results reveal that the quantitative stability isquite sensible to minor phases, identical to the internal standard, in fly ash. Errors positively correlatewith the weight fraction of that minor phase and negatively correlate with the dosage of an internalstandard and amorphous phase content in fly ash. The original equation for the amorphous phasecalculation is not applicable for a case with a higher inherent quartz content (>2.5%) in fly ash while thedosages of the internal standard is lower than 20%. The original equation is modified as proposed. Basedon it, the quantitative results of five different patterns report a good reproducibility with the arithmeticmean errors and the standard errors of identified main phases of around 1%.
YR 2017
FD 2017
LK https://hdl.handle.net/10630/16171
UL https://hdl.handle.net/10630/16171
LA spa
NO Anal. Methods, 2017, 9, 2415
NO The access to the beamline BL14B1 facilities at the SSRF isappreciated and the support of SSRF management, User Officeand beamline staff is highly appreciated. This Research issupported by the National Natural Science Foundation of China(No. 51602126), the National Key Research and DevelopmentPlan of China (2016YFB0303505) and the Program for ScienticResearch Innovation Team in Colleges and Universities ofShandong Province.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026