Author(s)

Jean Faustin Sabouang^*, Jean Félix Beyala Ateba, Cebastien Joel Guembou Shouop, Josue Maya, Cedric Tayou Kamkumo, Lawan Loubou Mohamadou, Augustin Simo

National Radiation Protection Agency, Yaounde, Cameroon.

In this work the performance of a screening analytical method for Energy Dispersive X-Ray Fluorescence (EDXRF) analysis in terms of accuracy and precision was evaluated through analysis of rock standard reference materials. The method allowed the division of elements into four groups taking into account the excitation energies and measurement conditions of the sample. Two standard reference materials were used and 15 sample replicates were prepared and analyzed, then statistics were applied to assess the precision and accuracy of analytical results. The obtained results show that major compounds or elements (SiO₂, P₂O₅, K₂O, CaO, Fe₂O₃, Ti) can be determined in fine powder sample with a deviation lower than 15%, and a relative standard deviation in the range (1 - 10)%. The deviation was found to be lower than 5% for major compounds such as K₂O, and CaO, which suggest that the EDXRF is accurate in evaluating major elemental concentrations in rock samples. It was also found that the method seems to be more accurate and precise for major elements than for trace element investigation. This screening analytical method can be used for routine analysis with acceptable results, even though the method should be optimized to increase its precision and accuracy.

ED-XRF, Screening Method, Rock Material, Accuracy, Precision

Sabouang, J. , Ateba, J. , Shouop, C. , Maya, J. , Kamkumo, C. , Mohamadou, L. and Simo, A. (2023) Accuracy and Precision of Energy Dispersive X-Ray Fluorescence (EDXRF) Analysis of Trace and Major Elements in Rock Standard Reference Materials Using Fine Powder. Journal of Geoscience and Environment Protection, 11, 83-95. doi: 10.4236/gep.2023.116006.