On. Grebneva et al., ON-LINE-SORPTION PRECONCENTRATION AND INDUCTIVELY-COUPLED PLASMA-ATOMIC EMISSION-SPECTROMETRY DETERMINATION OF RARE-EARTH ELEMENTS, Spectrochimica acta, Part B: Atomic spectroscopy, 51(11), 1996, pp. 1417-1423
The system for on-line microcolumn sorption preconcentration and induc
tively coupled plasma atomic emission spectrometry determination of 14
rare earth elements (REEs) is described. Aminocarboxylic sorbents of
different structure are used. Preconcentration of REEs from the 20 ml
of sample solution and elution with 210 mu l of 1 mol l(-1) HCl result
s in an enrichment factor of 99. The detection limit of REEs is about
nx 0.1 mu g l(-1) (RSD 3-5%). The possibility of simultaneous REE dete
rmination in complicated solutions is demonstrated.