Spectral interferences of rare earth elements observed with a high resolution inductively coupled plasma atomic emission spectrometer V. Spectral interferences of lutetium, thulium, yttrium and ytterbium as matrices
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The spectral interferences of Lu, Tm, Y and Yb (100 mu m.L-1, separately) as matrices on the other REEs (1 or 5 mu m. mL(-1)) were observed with a high resolution ICP-AES with a grating of 3 600 grooves.mm(-1). Totally 66 analytical lines of 15 REEs were selected as the prominent lines for spectral interference studies. The "Q" values and "the true detection limit" were calculated for the selected prominent lines with the exist of the four matrix elements. The obtained information is useful in the selection of the best analytical lines for the determination of REEs in the other REEs' matrices.