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

0573407 - ÚIACH 2024 JP eng A - Abstrakt
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]
Grant CEP: GA ČR(CZ) GA21-05285S
Institucionální podpora: RVO:68081715
Klíčová slova: hydride generation * dielectric barrier discharge * speciation analysis
Obor OECD: 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.
Trvalý link: https://hdl.handle.net/11104/0343860