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Calculation of the Background Correction Error in Electrothermic Atomic Absorption Spectrometry |
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| Authors: | Sadagov Yu. M. Laptev S. A. |
| Affiliation: | (1) Departamento de Qu?mica, Universidade Federal de Santa Catarina, 88040-900 Florian?polis, SC, Brazil;(2) Departamento de Qu?mica Anal?tica, Instituto de Qu?mica, Universidade Federal da Bahia, 40170-290 Salvador, BA, Brazil;(3) Instituto de Qu?mica, Universidade Federal do Rio Grande do Sul, Av. Bento Gon?alves 9500, 91501-970 Porto Alegre, RS, Brazil;(4) Department of Interface Spectroscopy, ISAS—Institute for Analytical Sciences, Albert-Einstein-Str. 9, 12489 Berlin, Germany |
| Abstract: | A theoretical estimate is presented of the background correction error in electrothermic atomic absorption spectrometry with modulation of the coefficient of atomic absorption in an alternating magnetic field. The experimental results for the background absorption induced by scattering of radiation are in good agreement with theory. Substantial additional distortions in the output signal due to interaction of molecular vapor with the graphite surface arise in the case of a molecular background. |
| Keywords: | background correction absorption spectrometry radiation scattering |
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