Roll-over of analytical curves in atomic absorption spectrometry arising from background correction with pulsed hollow-cathode lamps |
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Authors: | L. de Galan M.T.C. de Loos-Vollebregt |
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Affiliation: | Laboratorium voor Analytische Scheikunde, Technische Hogeschool, Jaffalaan 9,2628 BX Delft, The Netherlands |
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Abstract: | A theoretical analysis of background correction systems in atomic absorption spectrometry reveals the interdependence of three phenomena: analytical sensitivity, roll-over of the analytical curve, and wavelength proximity of the background correction. The deuterium lamp system sacrifices wavelength proximity and the Zeeman technique is subject to roll-over. For the newly introduced correction technique using pulsed hollow-cathode lamps roll-over has also been observed, although the effect is reduced by sacrifices of both wavelength proximity and analytical sensitivity. |
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