| ALBRECHT, Michal, Martina MRKVIČKOVÁ, Milan SVOBODA, Jakub HRANÍČEK, Jan VORÁČ, Pavel DVOŘÁK, Jiří DĚDINA a Jan KRATZER. Atomization of lead hydride in a dielectric barrier discharge atomizer: Optimized for atomic absorption spectrometry and studied by laser-induced fluorescence. Spectrochimica Acta, Part B: Atomic Spectroscopy. Oxford: Pergamon-Elsevier Science Ltd, 2020, roč. 166, APR 2020, s. 1-8. ISSN 0584-8547. Dostupné z: https://dx.doi.org/10.1016/j.sab.2020.105819. |
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@article{1693656,
author = {Albrecht, Michal and Mrkvičková, Martina and Svoboda, Milan and Hraníček, Jakub and Voráč, Jan and Dvořák, Pavel and Dědina, Jiří and Kratzer, Jan},
article_location = {Oxford},
article_number = {APR 2020},
doi = {http://dx.doi.org/10.1016/j.sab.2020.105819},
keywords = {Dielectric barrier discharge; Lead; Hydride generation atomic absorption spectrometry; Laser-induced fluorescence},
language = {eng},
issn = {0584-8547},
journal = {Spectrochimica Acta, Part B: Atomic Spectroscopy},
title = {Atomization of lead hydride in a dielectric barrier discharge atomizer: Optimized for atomic absorption spectrometry and studied by laser-induced fluorescence},
url = {https://doi.org/10.1016/j.sab.2020.105819},
volume = {166},
year = {2020}
}
TY - JOUR
ID - 1693656
AU - Albrecht, Michal - Mrkvičková, Martina - Svoboda, Milan - Hraníček, Jakub - Voráč, Jan - Dvořák, Pavel - Dědina, Jiří - Kratzer, Jan
PY - 2020
TI - Atomization of lead hydride in a dielectric barrier discharge atomizer: Optimized for atomic absorption spectrometry and studied by laser-induced fluorescence
JF - Spectrochimica Acta, Part B: Atomic Spectroscopy
VL - 166
IS - APR 2020
SP - 1-8
EP - 1-8
PB - Pergamon-Elsevier Science Ltd
SN - 05848547
KW - Dielectric barrier discharge
KW - Lead
KW - Hydride generation atomic absorption spectrometry
KW - Laser-induced fluorescence
UR - https://doi.org/10.1016/j.sab.2020.105819
L2 - https://doi.org/10.1016/j.sab.2020.105819
N2 - Atomization of lead hydride in a plane-parallel volume dielectric barrier discharge (DBD) atomizer coupled to a high voltage power supply source with sinusoidal waveform (28.5 kHz) was optimized with detection by atomic absorption spectrometry. Argon was found as the best discharge gas under a flow rate of 175 mL min(-1) while the DBD optimum peak-to-peak high voltage was 25 kV. The performance of the novel DBD atomizer was compared to that of a conventional externally heated quartz tube atomizer (QTA) operating at 900 degrees C and 100 mL min(-1) Ar carrier gas flow rate. Sensitivity and limit of detection (LOD) in QTA reached 0.21 s ng(-1) Pb and 0.6 ng mL(-1) Pb, respectively, while they reached 0.04 s ng(-1) Pb and 2.3 ng mL(-1) Pb in DBD. Laser-induced fluorescence (LIF) was employed to investigate the spatial distribution of free Pb atoms as well as to quantify lead hydride atomization efficiency in both atomizers. Free Pb atoms were present only in a central region of DBD atomizer. Atomization efficiency of lead hydride was quantified by LIF to be 23 +/- 7%. On the contrary, free Pb atoms were distributed homogeneously along the whole optical arm in the QTA with atomization efficiency reaching 88 +/- 18%.
ER -
ALBRECHT, Michal, Martina MRKVIČKOVÁ, Milan SVOBODA, Jakub HRANÍČEK, Jan VORÁČ, Pavel DVOŘÁK, Jiří DĚDINA a Jan KRATZER. Atomization of lead hydride in a dielectric barrier discharge atomizer: Optimized for atomic absorption spectrometry and studied by laser-induced fluorescence. \textit{Spectrochimica Acta, Part B: Atomic Spectroscopy}. Oxford: Pergamon-Elsevier Science Ltd, 2020, roč.~166, APR 2020, s.~1-8. ISSN~0584-8547. Dostupné z: https://dx.doi.org/10.1016/j.sab.2020.105819.
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