Electrochemical speciation analysis for simultaneous determination of Cr(III) and Cr(VI) using an activated glassy carbon electrode

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F16%3A43910475" target="_blank" >RIV/62156489:43210/16:43910475 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/16:PU121933
Result on the web
<a href="http://dx.doi.org/10.1039/c6an00983b" target="_blank" >http://dx.doi.org/10.1039/c6an00983b</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c6an00983b" target="_blank" >10.1039/c6an00983b</a>

Result language
angličtina
Original language name
Electrochemical speciation analysis for simultaneous determination of Cr(III) and Cr(VI) using an activated glassy carbon electrode
Original language description
In this study, the enhancement of electrochemical signals of Cr(III) and Cr(VI) by using an activated glassy carbon electrode (GCE) measured by differential pulse voltammetry (DPV) is demonstrated. The activated GCE exhibited higher sensitivity for detection of Cr( III) and Cr(VI) compared with the bare GCE. By using the activated GCE, the limit of detection decreased 15.3 times (from 0.230 to 0.015 mu M) in the case of Cr(III) determination and 75 times (from 9.000 to 0.120 mu M) in the case of Cr(VI) determination. Moreover, a simultaneous speciation analysis of Cr( III) and Cr(VI) using the activated GCE was presented. Scanning electron microscopy, elemental mapping, and electrochemical impedance spectroscopy were employed for investigation of the surface of the activated GCE. Finally, the influence of different ions (Na+, K+, NH4+, SO42-, NO3-, and Cl- in the form of Na2SO4, NaNO3, NH4Cl, and KCl salts) on the speciation signals of Cr(III) and Cr(VI) in a mixture of the two Cr oxidation states was investigated.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CG - Electrochemistry
OECD FORD branch
—

Project
<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)