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

Result code in 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>

Alternative codes found

RIV/68081715:_____/19:00508762

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10406 - Analytical chemistry

Project

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Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

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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Number of pages

6

Pages from-to

257-262

Publisher name

Univerzita Karlova, Přírodovědecká fakulta

Place of publication

Praha

Event location

Prague

Event date

Sep 19, 2019

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

000576787700042