Elimination procedure in square-wave voltammetry

D 2014

Elimination procedure in square-wave voltammetry

TRNKOVÁ, Libuše, Iveta PILAŘOVÁ, Mehdi RAVANDEH and Jan HRBAC

Basic information

Original name

Elimination procedure in square-wave voltammetry

Name in Czech

Eliminační procedura ve square-wave voltametrii

Authors

TRNKOVÁ, Libuše, Iveta PILAŘOVÁ, Mehdi RAVANDEH and Jan HRBAC

Edition

Malmo, 15th International Conference on Electroanalysis, p. 88-88, 1 pp. 2014

Publisher

neuveden

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10403 Physical chemistry

Country of publisher

Sweden

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

printed version "print"

Organization unit

Faculty of Science

Keywords (in Czech)

square - wave voltametrie; eliminační procedura; oligonukleotidy; square-wave frekvence

Keywords in English

square-wave voltammetry; elimination procedure; oligonucleotides; square-wave frequency

Abstract

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.

Links

CZ.1.05/1.1.00/02.0068, interní kód MU

Name: CEITEC - středoevropský technologický institut (Acronym: CEITEC)

Investor: Ministry of Education, Youth and Sports of the CR, CEITEC - Central European Institute of Technology, 1.1 European Centres of Excellence

LH13053, research and development project

Name: Chemická a elektrochemická analýza purinových derivátů a jejich komplexů s mědí (Acronym: CECAP)

Investor: Ministry of Education, Youth and Sports of the CR

MUNI/A/0972/2013, interní kód MU

Name: Vývoj metod a instrumentace pro analýzu biologicky významných látek 2014 (Acronym: MIAB)

Investor: Masaryk University, Category A

Citovat

TRNKOVÁ, Libuše, Iveta PILAŘOVÁ, Mehdi RAVANDEH and Jan HRBAC. Elimination procedure in square-wave voltammetry. In 15th International Conference on Electroanalysis. Malmo: neuveden, 2014, p. 88-88.

@inproceedings{1187923,
   author = {Trnková, Libuše and Pilařová, Iveta and Ravandeh, Mehdi and Hrbac, Jan},
   address = {Malmo},
   booktitle = {15th International Conference on Electroanalysis},
   keywords = {square-wave voltammetry; elimination procedure; oligonucleotides; square-wave frequency},
   howpublished = {tištěná verze "print"},
   language = {eng},
   location = {Malmo},
   note = {Nepřenášet do RIV - není na WoS ani Scopus, neodpovídá definici druhů výsledků dle M17+},
   pages = {88-88},
   publisher = {neuveden},
   title = {Elimination procedure in square-wave voltammetry},
   year = {2014}
}

TY  - JOUR
ID  - 1187923
AU  - Trnková, Libuše - Pilařová, Iveta - Ravandeh, Mehdi - Hrbac, Jan
PY  - 2014
TI  - Elimination procedure in square-wave voltammetry
PB  - neuveden
CY  - Malmo
N1  - Nepřenášet do RIV - není na WoS ani Scopus, neodpovídá definici druhů výsledků dle M17+
KW  - square-wave voltammetry
KW  - elimination procedure
KW  - oligonucleotides
KW  - square-wave frequency
N2  - 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.
ER  -

TRNKOVÁ, Libuše, Iveta PILAŘOVÁ, Mehdi RAVANDEH and Jan HRBAC. Elimination procedure in square-wave voltammetry. In \textit{15th International Conference on Electroanalysis}. Malmo: neuveden, 2014, p.~88-88.

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