Exploring the potential of hydride generation atomic
fluorescence spectrometry for ultratrace elemental analysis

a 2024

Exploring the potential of hydride generation atomic fluorescence spectrometry for ultratrace elemental analysis

DĚDINA, Jiří, Stanislav MUSIL, Barbora ŠTÁDLEROVÁ, Milan SVOBODA, Jan KRATZER et. al.

Basic information

Original name

Exploring the potential of hydride generation atomic fluorescence spectrometry for ultratrace elemental analysis

Name in Czech

Výzkum potenciálu spojení generování hydridů s atomovou fluorescenční analýzou pro stopovou prvkovou analýzu

Authors

DĚDINA, Jiří (203 Czech Republic, guarantor), Stanislav MUSIL (203 Czech Republic), Barbora ŠTÁDLEROVÁ (203 Czech Republic), Milan SVOBODA (203 Czech Republic), Jan KRATZER (203 Czech Republic), Zdeněk NAVRÁTIL (203 Czech Republic, belonging to the institution), Jan ČECH (203 Czech Republic, belonging to the institution), Adam OBRUSNÍK (203 Czech Republic, belonging to the institution), Jan VORÁČ (203 Czech Republic), Martina MRKVIČKOVÁ (203 Czech Republic, belonging to the institution) and Pavel DVOŘÁK (203 Czech Republic, belonging to the institution)

Edition

European Symposium on Analytical Spectrometry, 2024

Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

10406 Analytical chemistry

Country of publisher

Poland

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Science

Keywords (in Czech)

fluorescence;stopová prvková analýza;atomizace;hydridy;plazma;výboje

Keywords in English

fluorescence;trace elemental analysis;atomization;hydrides;plasma;discharges

Abstract

ORIG CZ

V originále

The non-dispersive arrangement of atomic fluorescence spectrometry (AFS) is very simple and sensitive. It can provide extremely low limits of detection (LOD) and is cheap both in investment and in operation costs. The fundamental drawback of AFS is that it is affected by scattering and quenching problems, which are not easy to control. The potential of AFS to reach very low LODs can be fully achieved when using very mild atomization conditions which are compatible with the atomization of volatile species. This is the reason why AFS is currently associated prevalently with hydride generation (HG). Our long-term ambition is the development of HG AFS for ultratrace element determination. To approach this target, we have been optimizing individual components of our laboratory- made non-dispersive atomic fluorescence spectrometer. The history of our investigations of the two essential components of a non- dispersive atomic fluorescence spectrometer, hydride atomizers and atomic lamps, will be outlined. The miniature diffusion flame (MDF) is a standard hydride atomizer for AFS. We extensively studied advantages and limitations of this atomizer. The results motivated us to develop a new atomizer - flame-in-gas shield (FIGS) which is basically an argon shielded oxygen-hydrogen microflame. Compared with MDF, it is more complicated in construction as well as in operation but it offers better sensitivity and LOD and much greater potential for miniaturization. Employing spatially resolved laser induce fluorescence, we determined distributions of temperature, hydrogen radicals and free analyte atoms in both atomizers. This made us possible to discover the mechanism of hydride atomization in MDF as well as in FIGS. Regarding atomic lamps, mainly two their types have been used: electrodeless discharge lamp (EDL) or boosted-discharge hollow cathode lamp. EDLs are said to provide higher radiation intensities, however, the range of elements for which the EDLs are manufactured is limited to certain volatile elements. Boosted- discharge hollow cathode lamps are widely applied in the current commercial AFS instruments whereas EDLs are usually used in experimental laboratory setups of AFS. The relevant lamp settings are namely: atomic lamp input power/current and its modulation pattern. In principle, the intensity of the fluorescence radiation is proportional to the radiation source intensity. Consequently, higher sensitivity and lower LOD can be reached simply by increasing the intensity of the radiation source. Our latest research on atomic lamps focusing on the absolute intensity of the lamp radiation will be presented. The positive impact of optimizations of the relevant lamp settings will also be illustrated. The potential of further development of HG AFS in terms of pushing down LODs of hydride forming elements will be outlined.

In Czech

Výzkum potenciálu spojení generování hydridů s atomovou fluorescenční analýzou pro dosažení co nejnižších detekčních limitů při stopové prvkové analýze.

Links

GF23-05974K, research and development project

Name: Všestranné plazmové zdroje a pokročilé přístupy ke zpracování signálu jako nové koncepty ve stopové prvkové analýze a atomové spektrometrii

Investor: Czech Science Foundation, Lead Agency

Citovat

DĚDINA, Jiří, Stanislav MUSIL, Barbora ŠTÁDLEROVÁ, Milan SVOBODA, Jan KRATZER, Zdeněk NAVRÁTIL, Jan ČECH, Adam OBRUSNÍK, Jan VORÁČ, Martina MRKVIČKOVÁ and Pavel DVOŘÁK. Exploring the potential of hydride generation atomic fluorescence spectrometry for ultratrace elemental analysis. In European Symposium on Analytical Spectrometry. 2024.

@proceedings{2418600,
   author = {Dědina, Jiří and Musil, Stanislav and Štádlerová, Barbora and Svoboda, Milan and Kratzer, Jan and Navrátil, Zdeněk and Čech, Jan and Obrusník, Adam and Voráč, Jan and Mrkvičková, Martina and Dvořák, Pavel},
   booktitle = {European Symposium on Analytical Spectrometry},
   keywords = {fluorescence;trace elemental analysis;atomization;hydrides;plasma;discharges},
   language = {eng},
   note = {Dále podporováno projektem: Institute of Analytical Chemistry (RVO: 68081715)},
   title = {Exploring the potential of hydride generation atomic fluorescence spectrometry for ultratrace elemental analysis},
   year = {2024}
}

TY  - CONF
ID  - 2418600
AU  - Dědina, Jiří - Musil, Stanislav - Štádlerová, Barbora - Svoboda, Milan - Kratzer, Jan - Navrátil, Zdeněk - Čech, Jan - Obrusník, Adam - Voráč, Jan - Mrkvičková, Martina - Dvořák, Pavel
PY  - 2024
TI  - Exploring the potential of hydride generation atomic fluorescence spectrometry for ultratrace elemental analysis
N1  - Dále podporováno projektem: Institute of Analytical Chemistry (RVO: 68081715)
KW  - fluorescence;trace elemental analysis;atomization;hydrides;plasma;discharges
N2  - The non-dispersive arrangement of atomic fluorescence spectrometry (AFS) is very simple and sensitive. It can provide extremely low limits of detection (LOD) and is cheap both in investment and in operation costs. The fundamental drawback of AFS is that it is affected by scattering and quenching problems, which are not easy to control. The potential of AFS to reach very low LODs can be fully achieved when using very mild atomization conditions which are compatible with the atomization of volatile species. This is the reason why AFS is currently associated prevalently with hydride generation (HG). Our long-term ambition is the development of HG AFS for ultratrace element determination. To approach this target, we have been optimizing individual components of our laboratory- made non-dispersive atomic fluorescence spectrometer. The history of our investigations of the two essential components of a non- dispersive atomic fluorescence spectrometer, hydride atomizers and atomic lamps, will be outlined. The miniature diffusion flame (MDF) is a standard hydride atomizer for AFS. We extensively studied advantages and limitations of this atomizer. The results motivated us to develop a new atomizer - flame-in-gas shield (FIGS) which is basically an argon shielded oxygen-hydrogen microflame. Compared with MDF, it is more complicated in construction as well as in operation but it offers better sensitivity and LOD and much greater potential for miniaturization. Employing spatially resolved laser induce fluorescence, we determined distributions of temperature, hydrogen radicals and free analyte atoms in both atomizers. This made us possible to discover the mechanism of hydride atomization in MDF as well as in FIGS. Regarding atomic lamps, mainly two their types have been used: electrodeless discharge lamp (EDL) or boosted-discharge hollow cathode lamp. EDLs are said to provide higher radiation intensities, however, the range of elements for which the EDLs are manufactured is limited to certain volatile elements. Boosted- discharge hollow cathode lamps are widely applied in the current commercial AFS instruments whereas EDLs are usually used in experimental laboratory setups of AFS. The relevant lamp settings are namely: atomic lamp input power/current and its modulation pattern. In principle, the intensity of the fluorescence radiation is proportional to the radiation source intensity. Consequently, higher sensitivity and lower LOD can be reached simply by increasing the intensity of the radiation source. Our latest research on atomic lamps focusing on the absolute intensity of the lamp radiation will be presented. The positive impact of optimizations of the relevant lamp settings will also be illustrated. The potential of further development of HG AFS in terms of pushing down LODs of hydride forming elements will be outlined.
ER  -

DĚDINA, Jiří, Stanislav MUSIL, Barbora ŠTÁDLEROVÁ, Milan SVOBODA, Jan KRATZER, Zdeněk NAVRÁTIL, Jan ČECH, Adam OBRUSNÍK, Jan VORÁČ, Martina MRKVIČKOVÁ and Pavel DVOŘÁK. Exploring the potential of hydride generation atomic fluorescence spectrometry for ultratrace elemental analysis. In \textit{European Symposium on Analytical Spectrometry}. 2024.

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