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

Micro volume voltammetric determination of 4-nitrophenol in dimethyl sulfoxide at a glassy carbon... Monatsh Chem (2017) 148:1639–1644 DOI 10.1007/s00706-017-1954-4 ORIGINAL PAPER Micro volume voltammetric determination of 4-nitrophenol in dimethyl sulfoxide at a glassy carbon electrode 1 1 2 1 • • • Ju ´ lius Gajda ´ r Jir ˇ´ ı Barek Miroslav Fojta Jan Fischer Received: 27 January 2017 / Accepted: 5 March 2017 / Published online: 1 July 2017 Springer-Verlag Wien 2017 Abstract This study presents a miniaturized instrumenta- Graphical abstract tion 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 descri- bed. 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 Keywords Square wave voltammetry which is less sensitive to the presence of oxygen in the Differential pulse voltammetry  4-Nitrophenol sample. Special apparatus capable of removing dissolved Glassy carbon electrode  Dimethyl sulfoxide oxygen from 20 mm of solution was also constructed and http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Monatshefte für Chemie - Chemical Monthly Springer Journals

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

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Publisher
Springer Vienna
Copyright
Copyright © 2017 by Springer-Verlag Wien
Subject
Chemistry; Chemistry/Food Science, general; Organic Chemistry; Inorganic Chemistry; Analytical Chemistry; Physical Chemistry; Theoretical and Computational Chemistry
ISSN
0026-9247
eISSN
1434-4475
D.O.I.
10.1007/s00706-017-1954-4
Publisher site
See Article on Publisher Site

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