Effect of metal sensitizers on photochemical vapor generation of bismuth for analytical atomic spectrometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10409592" target="_blank" >RIV/00216208:11310/19:10409592 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081715:_____/19:00508762

Výsledek na webu

<a href="http://web.natur.cuni.cz/analchem/isc/isc15.pdf" target="_blank" >http://web.natur.cuni.cz/analchem/isc/isc15.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of metal sensitizers on photochemical vapor generation of bismuth for analytical atomic spectrometry

Popis výsledku v původním jazyce

Conditions of photochemical vapor generation of bismuth were optimized in a flow-injection system with a standard mercury low-pressure tube lamp and a coiled reactor. A high-resolution continuum source atomic absorption spectrometer was used as a detector that was equipped with a miniature diffusion flame as an atomizer. The influence of flow rate of a carrier gas, irradiation time and composition of a reaction medium was investigated. Combination of 40% (v/v) acetic acid with 1.25% (v/v) formic acid was found optimal. Subsequently, the use of various metals as sensitizers was studied to achieve maximum generation efficiency. Except the already published positive effect of Fe2+, three new sensitizers were found, with the enhancement effect in the following order: Cu2+ &lt; Cd2+ &lt;&lt; Co2+. Interference from nitric acid which is commonly used for digestion of real samples was investigated. The limit of detection achieved with the optimal conditions was 5.9 μg L-1.

Název v anglickém jazyce

Effect of metal sensitizers on photochemical vapor generation of bismuth for analytical atomic spectrometry

Popis výsledku anglicky

Conditions of photochemical vapor generation of bismuth were optimized in a flow-injection system with a standard mercury low-pressure tube lamp and a coiled reactor. A high-resolution continuum source atomic absorption spectrometer was used as a detector that was equipped with a miniature diffusion flame as an atomizer. The influence of flow rate of a carrier gas, irradiation time and composition of a reaction medium was investigated. Combination of 40% (v/v) acetic acid with 1.25% (v/v) formic acid was found optimal. Subsequently, the use of various metals as sensitizers was studied to achieve maximum generation efficiency. Except the already published positive effect of Fe2+, three new sensitizers were found, with the enhancement effect in the following order: Cu2+ &lt; Cd2+ &lt;&lt; Co2+. Interference from nitric acid which is commonly used for digestion of real samples was investigated. The limit of detection achieved with the optimal conditions was 5.9 μg L-1.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 15th International Students Conference &quot;Modern Analytical Chemistry&quot;

ISBN

978-80-7444-068-7

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

257-262

Název nakladatele

Univerzita Karlova, Přírodovědecká fakulta

Místo vydání

Praha

Místo konání akce

Prague

Datum konání akce

19. 9. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000576787700042