Thermostated radio-frequency excited electrodeless discharge lamps as primary sources in AFS

The collisional line width of the resonance atomic absorption lines of Ca, Cu and In have been measured in graphite furnace atomisers by means of a wavelength modulated echelle spectrometer and a measurement method based on transmission profile fitting. A measurement precision of k O . 1 p m is observed for Cu (324.754 nm) based on growth curve shapes measured in peak area or peak height. Time resolved line widths within a single atomisation have been measured for Ca (422.673 nm) and for In (410.176 nm), with a time resolution of 0.3 s and a precision of k0.5 pm. This measurement precision is sufficient t o show clearly the effect of increased gas pressure on the line width and the line shift. Collisional cross-sectionsfor In and Ca are estimated from the effect of pressure on the line widths and shifts and are compared with previously published values obtained using theoretical calculations.

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Thermostated radio-frequency excited electrodeless discharge lamps as primary sources in AFS

Cited by 4 publications

References 12 publications

Emission line profile studies of electronic modulated inductively-coupled excited rf-EDL plasmas

Emission line profile studies of electronic modulated inductively-coupled excited rf-EDL plasmas

Atomic line profile measurements on hollow-cathode and electrodeless discharge lamps using a high-resolution echelle monochromator

Effect of gas pressure on the collisional line width and line shift in graphite furnace atomic absorption spectrometry

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