2014
Elimination procedure in square-wave voltammetry
TRNKOVÁ, Libuše, Iveta PILAŘOVÁ, Mehdi RAVANDEH a Jan HRBACZákladní údaje
Originální název
Elimination procedure in square-wave voltammetry
Název česky
Eliminační procedura ve square-wave voltametrii
Autoři
TRNKOVÁ, Libuše, Iveta PILAŘOVÁ, Mehdi RAVANDEH a Jan HRBAC
Vydání
Malmo, 15th International Conference on Electroanalysis, od s. 88-88, 1 s. 2014
Nakladatel
neuveden
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10403 Physical chemistry
Stát vydavatele
Švédsko
Utajení
není předmětem státního či obchodního tajemství
Forma vydání
tištěná verze "print"
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova česky
square - wave voltametrie; eliminační procedura; oligonukleotidy; square-wave frekvence
Klíčová slova anglicky
square-wave voltammetry; elimination procedure; oligonucleotides; square-wave frequency
Štítky
Změněno: 17. 5. 2018 14:18, Ing. Nicole Zrilić
Anotace
V originále
Square-wave voltammetry (SWV) is one of the four major voltammetric techniques provided by modern computer - controlled electroanalytical instruments. Applications of square-wave voltammetry include the study of electrode kinetics with regard to the preceding, following or catalytic homogenous chemical reactions and determination of some species at trace levels. In this communication we present the application of the elimination procedure to SWV results. Using the different dependence of a linear sweep voltammetric current component (diffusion, charging, kinetic..) on scan rate, EP is capable of conserving or eliminating some current components. The variable parameter for a desired elimination in SWV is square-wave frequency, and even though it is a pulse method which suppresses the influence of the charging current, the elimination procedure increases the sensitivity of SWV by one order. For a totally adsorbed electroactive particle, EP(eliminating simultaneously the kinetic and charging currents) also provides a specific signal in the form of peak-counterpeak and from the electroanalytical point of view this type of signal does not require a baseline correction. Our application approach was verified by means of reduction and oxidation signals of short synthetic oligonucleotides including the presence or absence of a homogeneous chemical reaction preceding the electron transfer. It is shown that SWV in connection with EP is a new powerful electrochemical technique that can be applied in both electrokinetic and quantitative determination of redox couples strongly immobilized on the electrode surface. Generally, treatment of voltammetric data by the elimination procedure gives a new dimension to voltammetric methods.
Návaznosti
CZ.1.05/1.1.00/02.0068, interní kód MU |
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LH13053, projekt VaV |
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MUNI/A/0972/2013, interní kód MU |
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