UV-photochemical vapour generation with in situ trapping in a graphite tube atomizer for ultratrace determination of selenium

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10312013" target="_blank" >RIV/00216208:11310/15:10312013 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1039/c5ja00173k" target="_blank" >http://dx.doi.org/10.1039/c5ja00173k</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c5ja00173k" target="_blank" >10.1039/c5ja00173k</a>

Result language
angličtina
Original language name
UV-photochemical vapour generation with in situ trapping in a graphite tube atomizer for ultratrace determination of selenium
Original language description
A very sensitive method has been developed for the determination of selenium (Se(IV)) utilizing continuous UV-photochemical vapour generation followed by in situ trapping and atomization of the generated volatile compounds in the graphite tube atomizer.Formic acid was chosen as a photochemical agent for the UV-assisted conversion of the analyte from the condensed to the gaseous phase. The only other chemical added to the liquid reaction mixture was nitric acid, which significantly increased the analytical signal. Introduction of selenium volatile products into the graphite tube covered with an iridium permanent modifier was done automatically. Optimum experimental conditions for generation, collection and atomization of volatile compounds were found and the analytical characteristics of the method were subsequently determined. A very low concentration limit of detection 4.1 ng L-1 of Se(IV) (corresponding to an absolute LOD 18 pg) was achieved. The repeatability expressed as % RSD was
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CB - Analytical chemistry, separation
OECD FORD branch
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Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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