High-resolution spectra of selected rare earth elements and spectral interferences studied by inductively coupled plasma-atomic emission spectroscopy (ICP-AES) |
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| Institution: | 1. School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China;2. China Nuclear E&C Group (CNEC) High Temperature Reactor Holdings Co. LTD., Beijing 100089, China;3. Changchun University of Chinese Medicine, Changchun 130117, China;4. China Nuclear E&C Group (CNEC) Co., Beijing 100037, China;5. Mendeleev University of Chemical Technology, Moscow 125190, Russia;1. School of Food Science and Environmental Health, Dublin Institute of Technology, Dublin 1, Ireland;2. School of Chemical Engineering, University of New South Wales, Sydney, Australia |
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| Abstract: | The rare earth elements (REEs) play very important roles in industrial manufacturing, technology development and biological processes. Due to their complex emission spectra, trace levels of REEs are difficult to analyze by conventional ICP-AES techniques. The present study investigates possible spectral interferences of matrices (rare earth oxides of Ce, Pr, Nd, Sm and Dy) on the analytical lines (± 0.1 nm) of a target REE. Detailed and well-resolved spectra for selected REEs are presented, and procedures used to rectify the problem of spectral interferences caused by REE matrices are discussed. A computer-assisted system (CAS) for spectral recognition has been developed and used to assist in the study of matrix interference. To determine directly trace rare earth elements in REE matrices without sample pre-separation, the application potential is demonstrated with a one meter sequential instrument retrofitted with a 3600 grooves/mm grating. |
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