Radical theory of hydride atomization and its significance for trace element analysis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081715%3A_____%2F24%3A00600124" target="_blank" >RIV/68081715:_____/24:00600124 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0357484" target="_blank" >https://hdl.handle.net/11104/0357484</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sab.2024.107058" target="_blank" >10.1016/j.sab.2024.107058</a>

Result language

angličtina

Original language name

Radical theory of hydride atomization and its significance for trace element analysis

Original language description

Extremely low limits of detection in trace element analysis can be achieved when coupling generation of volatile hydrides to the relatively simple methods of analytical atomic spectrometry - atomic fluorescence spectrometry (AFS) or atomic absorption spectrometry (AAS). To reach ideal performance of the whole analytical procedure, the atomizers dedicated for coupling with AAS or AFS (conventional externally heated quartz tubes - CQTA, miniature diffusion flames - MDF and dielectric barrier discharges - DBD) have to be optimized in terms of design as well as of operation parameters. Such an optimization can be made in a straightforward and elegant way based on the knowledge of what really happens in hydride atomizers. The key point which must be taken into account in order to understand what really happens in these atomizers is that their temperature is too low to be compatible with any significant thermal atomization of hydrides. The dramatic disagreement with the many years of experience of observing a complete conversion of hydrides to free atoms is explained by the radical theory of hydride atomization. The presented evidence corroborates the radical theory of hydride atomization in the CQTA. This makes possible optimization of design as well as of operational parameters of this kind of atomizer just on the basis of quantification of distributions of hydrogen radicals which can be determined either experimentally by two-photon absorption laser-induced fluorescence or potentially by numerical simulation. Regarding extension of the radical theory in the CQTA to MDF and DBD atomizers, more experimental evidence on free analyte atom distributions is required either to confirm its validity or to discover reasons for its failure.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10406 - Analytical chemistry

Project

<a href="/en/project/GF23-05974K" target="_blank" >GF23-05974K: Versatile plasma sources and advanced approaches to signal evaluation as novel concepts in ultratrace element analysis by atomic spectrometry</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Spectrochimica Acta Part B: Atomic Spectroscopy

ISSN

0584-8547

e-ISSN

1873-3565

Volume of the periodical

221

Issue of the periodical within the volume

NOV

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

107058

UT code for WoS article

001346523700001

EID of the result in the Scopus database

2-s2.0-85206992907