Abstract

A method was developed for the determination of rare earth impurities in high purity Gd2O3 by inductively coupled plasma mass spectrometry (ICP-MS). The matrix suppression effect of Gd2O3 on signals of rare earth impurities was compensated for by Re internal standardization. The spectra overlap interferences from GdH, GdO, GdOHn (n=1–3) on Tb, Tm, Yb and Lu were eliminated by 2-thylhexylhydrogen-2-ethylhexy phosphonate (EHEHP) extraction chromatographic separation. The detection limits for REEs were 0.005–0.017 ng ml−1 in solution and 0.002–0.05 μg g−1 in solid. Recoveries of spiked sample for REEs were from 88 to 121% with the precision of 1.0–7.5% RSD. Determination of trace REEs in two Gd2O3 samples were performed. The method can be applied to analysis of 99.99–99.9999% high purity Gd2O3.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.