Plasma discharges for trace element analysis - from their development to applications and mechanistic studies

0573407 - ÚIACH 2024 JP eng A - Abstract
Kratzer, Jan - Svoboda, Milan - Vlčková, Nikol - Slota, Alexandra - Plecháč, Matěj - Matoušek, Tomáš - Mrkvičková, M. - Dvořák, P. - Dědina, Jiří
Plasma discharges for trace element analysis - from their development to applications and mechanistic studies.
Proceedings of CSI XLIII & ASLIBS 2023: Colloquium Spectroscopicum Internationale XLIII & 5th Asian Symposium on Laser Induced Breakdown Spectroscopy. 2023. s. 1-1.
[Colloquium Spectroscopicum Internationale /43./ & Asian Symposium on Laser Induced Breakdown Spectroscopy /5./. 26.06.2023-30.06.2023, Tokushima]
R&D Projects: GA ČR(CZ) GA21-05285S
Institutional support: RVO:68081715
Keywords : hydride generation * dielectric barrier discharge * speciation analysis
OECD category: Analytical chemistry

Atomization of Pb, Bi, Se, Te and Ge hydrides in QTA and DBD based atomizers for AAS is discussed. Sensitivity and resistance to interferences under optimum conditions is evaluated. Mechanism of atomization was investigated by laser induced fluorescence (LIF). As species were separated by HPLC to be subsequently treated by post-column VSG followed by in-situ preconcentration in DBD and AAS detection. Preconcentration efficiency exceeds 90% for all four As species tested while the system is fully automated. Analytical figures of merit and method validation by certified reference material of urine is presented.
Permanent Link: https://hdl.handle.net/11104/0343860