Si. Prokopchuk et al., Evaluation of spectral interferences in the atomic emission determination of some rare-earth elements and yttrium in natural samples, J ANALYT CH, 55(4), 2000, pp. 313-320
Spectral interferences were quantitatively estimated using two characterist
ics: (1) Q(1)(lambda(a)) and Q(W)(Delta lambda(a)) defined as the ratio of
sensitivities of overlapping lines or their wings to the sensitivity of the
line under investigation (lambda(a)) and (2) c(L,) (1) quantities defined
as the contribution of foreign (interfering) lines to the real detection li
mit at the analytical line. With the use of an automated wave scanning and
computer treatment of spectra, 20 analytical lines of medium and heavy lant
hanides (from Eu to Lu) and Y and also overlapping lines of 29 interfering
elements were examined. An are two-jet plasmatron with an argon flow, predo
minantly giving a spark spectrum of rear-earth elements, was used as a sour
ce of excitation. The data obtained can be used in the atomic-emission anal
ysis of natural samples for selecting preferential analytical lines.