Application of elimination voltammetry with linear scan to the
study of reduction of cadmium on various electrodes

D 2004

Application of elimination voltammetry with linear scan to the study of reduction of cadmium on various electrodes

ROZIK, Roland; Libuše TRNKOVÁ a René KIZEK

Základní údaje

Originální název

Application of elimination voltammetry with linear scan to the study of reduction of cadmium on various electrodes

Název česky

Aplikace eliminační voltametrie s lineárním scanem ke studiu redukce kadmia na různých elektrodách

Autoři

ROZIK, Roland (703 Slovensko); Libuše TRNKOVÁ (203 Česká republika, garant) a René KIZEK (203 Česká republika)

Vydání

Brno, Česká republika, Sborník příspěvků IV. pracovní setkání fyzikálních chemiků a elektrochemiků, od s. 36-36, 1 s. 2004

Nakladatel

Masarykova Univerzita v Brně

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10405 Electrochemistry

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/04:00011172

Organizační jednotka

Přírodovědecká fakulta

ISBN

80-210-3319-3

Klíčová slova anglicky

Elimination voltammetry with linear scan; Hg and PIGE electrodes; Cd2+/Cd reduction; cadmium deposition

Štítky

cadmium deposition, Cd2+/Cd reduction, Hg and PIGE electrodes

Změněno: 18. 2. 2005 14:32, Mgr. Roland Rozik, Ph.D.

Anotace

ORIG CZ

V originále

The electrochemical reduction of cadmium ions on a mercury electrode in aqueous solutions with KCl as supporting electrolyte is well known and often used for calibration of electrode systems. However, the mechanism of cadmium electrodeposition on, and stripping from mercury or other electrodes in aqueous solution with different supporting electrolytes has not been explained in details yet. In this contribution we have focused on interpretation of the Cd2+/Cd 0 process on various electrodes and in various solutions by using elimination voltammetry with linear scan (EVLS). The total current responses recorded in linear sweep voltammetry (LSV) consist of some particular currents, e.g. charging, diffusion, and kinetic currents. The EVLS enables a chosen particular current to be eliminated and unknown processes to be revealed. This approach was chosen for the study of redox processes of cadmium on a hanging mercury drop electrode (HMDE) or a paraffin-impregnated graphite electrode (PIGE). While the LSV current responses of cadmium were quite similar for both electrodes, the EVLS curves showed substantial differences. The reduction of Cd2+ was accompanied with a kinetic process. The effect of anions of the supporting electrolytes on the mechanism of the reduction process was studied. On each of the two electrodes, the elimination functions in three electrolytes (KNO3, KCl, and K2SO4) were similar. However, in each of the electrolytes, there were differences in EVLS functions between HMDE and PIGE, probably because of the different behavior of anions in the electrode double layer.

Česky

Aplikace eliminační voltametrie s lineárním scanem ke studiu redukce kadmia na různých elektrodách

Návaznosti

GA203/02/0422, projekt VaV

Název: Nové směry v elektrochemii nukleových kyselin a jejich aplikace v chemii životního prostředí

Investor: Grantová agentura ČR, Nové směry v elektrochemii nukleových kyselin a jejich aplikace v chemii životního prostředí

IAA1163201, projekt VaV

Název: Využití adsorptivní přenosové a eliminační techniky pro elektrochemickou analýzu oligonukleotidů a nukleových kyselin

Investor: Akademie věd ČR, Využití adsorptivní přenosové a eliminační techniky pro elektrochemickou analýzu oligonukleotidů a nukleových kyselin

Citovat

ROZIK, Roland; Libuše TRNKOVÁ a René KIZEK. Application of elimination voltammetry with linear scan to the study of reduction of cadmium on various electrodes. In Sborník příspěvků IV. pracovní setkání fyzikálních chemiků a elektrochemiků. Brno, Česká republika: Masarykova Univerzita v Brně, 2004, s. 36-36. ISBN 80-210-3319-3.

@inproceedings{493088,
   author = {Rozik, Roland and Trnková, Libuše and Kizek, René},
   address = {Brno, Česká republika},
   booktitle = {Sborník příspěvků IV. pracovní setkání fyzikálních chemiků a elektrochemiků},
   keywords = {Elimination voltammetry with linear scan; Hg and PIGE electrodes; Cd2+/Cd reduction; cadmium deposition},
   language = {eng},
   location = {Brno, Česká republika},
   isbn = {80-210-3319-3},
   pages = {36-36},
   publisher = {Masarykova Univerzita v Brně},
   title = {Application of elimination voltammetry with linear scan to the study of reduction of cadmium on various electrodes},
   year = {2004}
}

TY  - CONF
ID  - 493088
AU  - Rozik, Roland - Trnková, Libuše - Kizek, René
PY  - 2004
TI  - Application of elimination voltammetry with linear scan to the study of reduction of cadmium on various electrodes
PB  - Masarykova Univerzita v Brně
CY  - Brno, Česká republika
SN  - 8021033193
KW  - Elimination voltammetry with linear scan
KW  - Hg and PIGE electrodes
KW  - Cd2+/Cd reduction
KW  - cadmium deposition
N2  - The electrochemical reduction of cadmium ions on a mercury electrode in aqueous solutions with KCl as supporting electrolyte is well known and often used for calibration of electrode systems. However, the mechanism of cadmium electrodeposition on, and stripping from mercury or other electrodes in aqueous solution with different supporting electrolytes has not been explained in details yet. In this contribution we have focused on interpretation of the Cd2+/Cd 0 process on various electrodes and in various solutions by using elimination voltammetry with linear scan (EVLS). The total current responses recorded in linear sweep voltammetry (LSV) consist of some particular currents, e.g. charging, diffusion, and kinetic currents. The EVLS enables a chosen particular current to be eliminated and unknown processes to be revealed. This approach was chosen for the study of redox processes of cadmium on a hanging mercury drop electrode (HMDE) or a paraffin-impregnated graphite electrode (PIGE). While the LSV current responses of cadmium were quite similar for both electrodes, the EVLS curves showed substantial differences. The reduction of Cd2+ was accompanied with a kinetic process. The effect of anions of the supporting electrolytes on the mechanism of the reduction process was studied. On each of the two electrodes, the elimination functions in three electrolytes (KNO3, KCl, and K2SO4) were similar. However, in each of the electrolytes, there were differences in EVLS functions between HMDE and PIGE, probably because of the different behavior of anions in the electrode double layer.
ER  -

ROZIK, Roland; Libuše TRNKOVÁ a René KIZEK. Application of elimination voltammetry with linear scan to the study of reduction of cadmium on various electrodes. In \textit{Sborník příspěvků IV. pracovní setkání fyzikálních chemiků a elektrochemiků}. Brno, Česká republika: Masarykova Univerzita v Brně, 2004, s.~36-36. ISBN~80-210-3319-3.

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