Selenium preconcentration in a gold "amalgamator" after hydride generation for atomic spectrometry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F20%3A43934131" target="_blank" >RIV/60461373:22340/20:43934131 - isvavai.cz</a>
Alternative codes found
RIV/68081715:_____/20:00533064
Result on the web
<a href="https://doi.org/10.1039/D0JA00227E" target="_blank" >https://doi.org/10.1039/D0JA00227E</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d0ja00227e" target="_blank" >10.1039/d0ja00227e</a>
Alternative languages
Result language
angličtina
Original language name
Selenium preconcentration in a gold "amalgamator" after hydride generation for atomic spectrometry
Original language description
A gold amalgamator, used conventionally for Hg vapor enrichment, is reported to preconcentrate Se after hydride generation. The optimum trapping and volatilization temperatures were 450 and 970 degrees C, respectively. Preconcentration processes are controlled by temperature only while the carrier gas composition remains unchanged (75 ml min(-1)H(2)). This is a significant advantage compared to the approach reported previously based on gold wire, where Se preconcentration was controlled by both surface temperature and carrier gas composition. Moreover, the gold amalgamator offers higher capacity and better resistance to interference, at least by an order of magnitude. This approach to Se preconcentration is very well compatible with atomic absorption spectrometry using a modular trap-and-atomizer device reported recently. The limit of detection for 300 s sample introduction time reached 13 pg ml(-1)Se (absolute LOD 247 pg Se). The method developed was validated by analysis of water certified reference materials. The mechanism of selenium hydride trapping was investigated employing a(75)Se radioactive indicator. The potential of coupling the gold amalgamator trap to an inductively coupled plasma mass spectrometer was also investigated. However, severe transport losses of volatilized Se species occur between the heated amalgamator and the torch due to analyte condensation on colder surfaces, preventing routine use of this set-up.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
ISSN
0267-9477
e-ISSN
1364-5544
Volume of the periodical
35
Issue of the periodical within the volume
10
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
2132-2141
UT code for WoS article
000578579900004
EID of the result in the Scopus database
2-s2.0-85093513697