Spectral interferences in the determination of traces of scandium, yttrium and rare earth elements in "pure" rare earth matrices by inductively coupled plasma atomic emission spectrometry - Part VII - Terbium, dysprosium, holmium and thulium

This article is the seventh part of a series of papers discussing the spectral interferences of rare earth elements (REEs) in ICP-AES. Radial viewing 27.12 MHz inductively coupled plasma atomic emission spectrometry (ICP-AES) was used in the determination of scandium, yttriurn and rare earth elements in Tb2O3, Dy2O3, Ho2O3 and Tm2O3 as "pure" rare earth matrices. The quantification of the interferences in terms of Q-values for line interference Q(1(a)) and wing background interference Q(W(Delta lambda a)) were used in accordance with Boumans and Vrakking [Spectrochim. Acta Part B 43 (1988) 69]. The "best" analysis lines from point of view of spectral interferences were selected. The true detection limits by using the "best" analysis lines were calculated. (C) 2008 Published by Elsevier B.V.