Optimization of hydride atomizers for atomic absorption spectrometry by two-photon absorption laser-induced fluorescence

0474376 - ÚIACH 2018 BR eng A - Abstract
Dědina, Jiří - Kratzer, Jan - Talába, M. - Dvořák, P.
Optimization of hydride atomizers for atomic absorption spectrometry by two-photon absorption laser-induced fluorescence.
14 th Rio Symposium on Atomic Spectrometry. Book of Abstracts and Scientific Program. 2017. s. 47-47.
[Rio Symposium on Atomic Spectrometry /14./. 02.04.2017-07.04.2017, Vitória]
R&D Projects: GA ČR GA17-04329S
Grant - others:GA MŠk LO1411
Institutional support: RVO:68081715
Keywords : atomic fluorescence detectors * atomic absorption detectors * volatile species * hydrogen radical
Subject RIV: CB - Analytical Chemistry, Separation

Our research is focused on analytical applications of the generation of volatile species for atomic absorption and atomic fluorescence detectors. To fully utilize the potential of volatile species generation the atomization step has to be optimized. Currently, the optimization is typically performed on the purely trial and error basis. The reason is that atomization of volatile species in the most often employed atomizers, quartz tubes and flames, proceeds via analyte interaction with hydrogen radicals which are extremely difficult to detect even though they are present in these atomizers at concentration several orders of magnitude above the equilibrium. There were attempts to prove hydrogen radical presence in quartz tube atomizers but no conclusive results were found because of the extreme complexity of employed techniques.
Permanent Link: http://hdl.handle.net/11104/0271439