@article { author = {Blagojević, Dragana and Lazić, Dragica and Kešelj, Dragana and Škundrić, Branko and Dugić, Pero and Ostojić, Gordana}, title = {Determining the Content of Silicon Dioxide in Bauxites Using X-Ray Fluorescence Spectrometry}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {4}, pages = {115-125}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.34231}, abstract = {The X-ray fluorescence spectrometry and the MA.BM.006 reference spectrophotometric methods were used to determine the content of SiO2 (%) in bauxites from different deposits. The treatment of samples prior to the analysis involved the following steps: annealing, melting using the borax method,  and the formation of beads. Certified reference bauxite samples were used for the calibration curve. The calibration curve was produced with the correlation coefficient of r =0.9999 and the standard error of  S = 0.0246. The average residual value between the content of SiO2 determined using the XRF method, and the reference method was 0.045, with a standard deviation of 0.068. The XRF method was statistically verified by the F- and t- tests (using the standard sample and the reference method). The values obtained in the tests show that the XRF method yields accurate results and that there are no standard errors.}, keywords = {XRF method,spectrophotometric method,bauxite,silicon dioxide}, url = {https://ijcce.ac.ir/article_34231.html}, eprint = {https://ijcce.ac.ir/article_34231_54441f1de710c09dd13bac36af0c19bd.pdf} }