Laser-excited ionic fluorescence spectrometry of rare earth elements in the inductively coupled plasma

Department of Chemistry, University of Florida, Gainesville, FL 32611 U.S.A.
Analytica Chimica Acta - ANAL CHIM ACTA 01/1987; 199(1):111-118. DOI: 10.1016/S0003-2670(00)82802-0

ABSTRACT A pulsed tunable dye laser pumped with an excimer laser is used to excite ionic fluorescence of the rare earth elements in the inductively-coupled plasma. Because several fluorescence lines were observed after laser excitation, it was possible to draw partial energy-level diagrams for most of the rare earths. Non-resonance fluorescence lines were used for all measurements in order to minimize spectral interferences. Detection limits at given excitation wavelengths are reported for each element. Laser-excited ionic fluorescence eliminates the problem of spectral interferences which has been associated with determination of the rare earths by atomic emission spectrometry in the inductively-coupled plasma.

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