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Boron-doped diamond electrodes in electroanalysis of reducible organic compounds
Vosáhlová, J. ; Zavázalová, J. ; Petrák, Václav ; Schwarzová-Pecková, K.
Boron doped diamond (BDD) electrodes became a well-established tool in electroanalysis of oxidizable organic compounds, nevertheless their possibilities in electroanalysis of reducible compounds remain relatively unexploited. Thus, in this study the influence of the presence of oxygen, electrode pretreatment, and activation between individual scans for electroreduction of tartrazine and allura red (azo group), 5-nitroquinoline (nitro group and N-heterocycle), vanillin (aromatic aldehyde), and azidothymidine (azide group) using batch voltammetry was tested.
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Boron-doped diamond electrodes in electroanalysis of reducible organic compounds
Vosáhlová, J. ; Zavázalová, J. ; Petrák, Václav ; Schwarzová-Pecková, K.
Boron doped diamond (BDD) electrodes became a well-established tool in electroanalysis of oxidizable organic compounds; nevertheless their possibilities in electroanalysis of reducible compounds remain relatively unexploited. Thus, in this study the influence of the presence of oxygen, electrode pretreatment, and activation between individual scans for electroreduction of tartrazine and allura red (azo group), 5-nitroquinoline (nitro group and N-heterocycle), vanillin (aromatic aldehyde), and azidothymidine (azide group) using batch voltammetry was tested.
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Utilization of Catalytic Hydrogen Evolution in Electrochemical Analysis of Nucleic Acids
Fojta, Miroslav ; Daňhel, Aleš ; Špaček, Jan ; Havran, Luděk ; Šebest, Peter ; Orság, Petr ; Pivoňková, Hana ; Vosáhlová, J. ; Schwarzová-Pecková, K.
Catalysis of hydrogen evolution (CHE) at mercury in the presence of proteins was discoverd shortly after the introduction of polarography. In contrast, unmodified nucleic acids have not been reported to produce distinct signals due to the CHE to date. Chemically modified nucleic acids bearing certain extrinsic groups produce analytically useful signals due to hydrogen evloution catalyzed by the respective modifications. These species include (a) transition metal complexes, and (b) non-metal catalytically active organic moieties. In addition, the CHE has been reported to be invoved in guanine reduction process at the mercury-based electrodes.
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