A technique for determination of metallic impurities in Al2O3 matrix by EDXRF

Abstract

The applicability of energy dispersive X-ray fluorescence spectrometry as an analytical technique for the determination of a few metallic impurities such as Ca, Cr, Cu, Fe, Mn, Pb, and Zn in alumina (Al 2 O 3 ) matrix was investigated. A series of Al 2 O 3 standards containing the elements of interest in the range 10-1000 ppm was prepared and the spectrometer conditions were optimized to obtain calibration plots for the various analytes that could be further used for the analysis of actual samples. The present method serves as an alternative to currently used AES method for analytes expected in the concentration range 50-1000 ppm.

Indirect ultraviolet detection of alkaline earth metal ions using an imidazolium ionic liquid as an ultraviolet absorption reagent in ion chromatography

“…Therefore, it is necessary to develop the analytical method of alkaline earth metal ions. Several analytical methods such as atomic absorption spectrometry , fluorescence spectrometry , inductively coupled plasma , enzyme analysis , biosensor , and ion chromatography (IC) have been developed for the determination of alkaline earth metal ions. At present, the separation and detection of alkaline earth metal ions using IC with conductivity detection have gradually become well established, but the separation and detection method for IC with UV detection has been relatively reported few times .…”