Publication details

Radical theory of hydride atomization confirmed after four decades - determination of H radicals in the quartz hydride atomizer by two-photon absorption laser-induced fluorescence

Authors

DVOŘÁK Pavel TALÁBA Marek KRATZER Jan DĚDINA Jiří

Year of publication 2019
Type Article in Periodical
Magazine / Source Chemical Science
MU Faculty or unit

Faculty of Science

Citation
Web Full Text
Doi http://dx.doi.org/10.1039/C8SC05655B
Keywords atomizator; atomic hydrogen; TALIF; hydrides
Description To reach an excellent performance for elemental and speciation analysis offered by the hydride generation coupled to atomic absorption/fluorescence detectors, an optimization of hydride atomization is required. It can be realized in a straightforward way based on a knowledge how experimental conditions influence the distribution of hydrogen atoms in a given atomizer type. In the quartzQuartz-tube atomizersperformance tube atomizer, most often employed hydride atomizer for atomic absorption spectrometry, two-photon absorption laser-induced fluorescence (TALIF) was employed (i) to bring after four decades for the first time a conclusive proof of the existence of H radical population sufficient to atomize hydrides thus confirming unambiguously the radical theory of hydride atomization and (ii) to determine distribution of H radicals in the atomizer. The superb power of TALIF to determine spatial distribution of H radicals in hydride atomizers opens a way to an elegant optimization of hydride atomization.
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