2020
Atomization of lead hydride in a dielectric barrier discharge atomizer: Optimized for atomic absorption spectrometry and studied by laser-induced fluorescence
ALBRECHT, Michal; Martina MRKVIČKOVÁ; Milan SVOBODA; Jakub HRANÍČEK; Jan VORÁČ et al.Základní údaje
Originální název
Atomization of lead hydride in a dielectric barrier discharge atomizer: Optimized for atomic absorption spectrometry and studied by laser-induced fluorescence
Autoři
ALBRECHT, Michal; Martina MRKVIČKOVÁ; Milan SVOBODA; Jakub HRANÍČEK; Jan VORÁČ; Pavel DVOŘÁK; Jiří DĚDINA a Jan KRATZER
Vydání
Spectrochimica Acta, Part B: Atomic Spectroscopy, Oxford, Pergamon-Elsevier Science Ltd, 2020, 0584-8547
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
21100 2.11 Other engineering and technologies
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.752
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/20:00114469
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Dielectric barrier discharge; Lead; Hydride generation atomic absorption spectrometry; Laser-induced fluorescence
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 11. 2020 14:35, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
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%.
Návaznosti
| ED2.1.00/03.0086, projekt VaV |
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| GA17-04329S, projekt VaV |
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| LO1411, projekt VaV |
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