Micro volume voltammetric determination of 4-nitrophenol in dimethyl sulfoxide at a glassy carbon electrode

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081707%3A_____%2F17%3A00485559" target="_blank" >RIV/68081707:_____/17:00485559 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/17:10362379
Result on the web
<a href="http://dx.doi.org/10.1007/s00706-017-1954-4" target="_blank" >http://dx.doi.org/10.1007/s00706-017-1954-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00706-017-1954-4" target="_blank" >10.1007/s00706-017-1954-4</a>

Result language
angličtina
Original language name
Micro volume voltammetric determination of 4-nitrophenol in dimethyl sulfoxide at a glassy carbon electrode
Original language description
This study presents a miniaturized instrumentation for the determination of a model electrochemically reducible compound, 4-nitrophenol, in micro volumes of dimethyl sulfoxide at the glassy carbon electrode. Several working configurations of a three-electrode system and different constructions of reference electrodes are described. Moreover, the problem of the removal of oxygen (which is rather difficult in micro volumes) complicating the determination by differential pulse voltammetry, especially in a cathodic potential range was successfully solved. It has been found that the interference of oxygen can be partly eliminated by square wave voltammetry which is less sensitive to the presence of oxygen in the sample. Special apparatus capable of removing dissolved oxygen from 20 mm(3) of solution was also constructed and tested. It was verified that 4-nitrophenol can be determined in micro volumes of dimethyl sulfoxide by square wave voltammetry in the presence of dissolved oxygen (limit of quantification LOQ = 6.0 mu mol dm(-3)) and by differential pulse voltammetry after the removal of dissolved oxygen (LOQ = 2.4 mu mol dm(-3)). Both those methods are comparable with the determination in a macro volume (5.0 cm(3)), which has LOQ = 1.3 mu mol dm(-3).
Czech name
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Czech description
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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
10608 - Biochemistry and molecular biology

Project
<a href="/en/project/GBP206%2F12%2FG151" target="_blank" >GBP206/12/G151: Center of novel approaches to bioanalysis and molecular diagnostics</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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