Spectral overlap of the neon 359.352-nm and chromium 359.349-nm spectral lines in atomic absorption and atomic fluorescence spectrometry of chromium

Applications of spectral overlap in atomic absorption spectrometry

“…No new instances of spectral overlaps inducing atomic fluorescence were found. Several instances have been previously reported (7,9,10,12,13) for fluorescence, however. This may be partially attributable to the fact that hollow cathode lamps were employed as the spectral source, and it may well be that if electrodeless discharge lamps had been used, atomic fluorescence might have been stimulated by means of some of these spectral overlaps because of the higher intensity and broader profile of atomic lines generally produced by these lamps.…”

“…Eighteen instances of the overlap of the spectral lines of different pairs of elements have been reported in the literature for atomic absorption spectrometry (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11), and these are listed in Table I. This phenomenon suggests that atomic emission and absorption line profiles may be considerably broader than has frequently been suggested.…”

“…Some of these spectral overlaps, when both the emission and absorption lines are resonance lines, serve to explain observed atomic absorption interference effects. However, in a few of those cases (1, [5][6][7]9), when the emission line is a non-resonance line, a sufficient atomic absorption sensitivity has been reported by means of the spectral overlap, for it to be of some potential analytical use. Three of the spectral overlaps included in Table I, viz., arsenic-cadmium, iodine-bismuth and neon-chromium, (In all references to spectral overlaps, the emitting element is given first and the absorbing element second.)…”