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Pregled bibliografske jedinice broj: 643327

Cyclic voltammetry of the second order CE mechanism at the thin mercury film covered stationary planar electrode


Lovrić, Milivoj
Cyclic voltammetry of the second order CE mechanism at the thin mercury film covered stationary planar electrode // book of abstracts / Ignacio González, Yunny Meas (ur.).
Queretaro, Meksiko: ISE Meksiko, 2013. str. 372-372 (poster, međunarodna recenzija, sažetak, znanstveni)


CROSBI ID: 643327 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Cyclic voltammetry of the second order CE mechanism at the thin mercury film covered stationary planar electrode

Autori
Lovrić, Milivoj

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts / Ignacio González, Yunny Meas - Queretaro, Meksiko : ISE Meksiko, 2013, 372-372

Skup
64th ISE meeting

Mjesto i datum
Queretaro, Meksiko, 08. - 13. 09. 2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cyclic voltammetry

Sažetak
A cyclic voltammogram (CV) of a certain metal-ligand complex ML depends on the stability constant and the dissociation rate constant of the complex. If the first constant is big and the second one is small, the complex is characterized as being stable and inert. In the opposite case the complex is labile. Generally, the formal potential of free metal ions Mn+ is higher than the half-wave potential of the complex. So, this electrode reaction is a CE mechanism, in which the dissociation of the complex is the preceding chemical reaction. This applies to both electro-inactive and electro-active complexes. In the later case two peaks appear in the cathodic branch of CV. In the anodic branch the current depends on the rate constant of complex formation and the concentration of free ligand Ln-. In the theory of CE mechanism it is usually assumed that chemical reaction is pseudo-first order. This is because in the experiment the concentration of one reactant can be adjusted to the great excess. However, in natural waters the concentrations of free ligands that form inert complexes with heavy metal ions are low and comparable with the total metal concentrations [1]. So, in pseudopolarography of metal complexes in traces, a single anodic stripping voltammetric cycle is the second order CE mechanism and the potential of the stripping peak should depend on the free ligand concentration. The purpose of this work is to investigate this hypothesis theoretically. ML Mn+ + Ln- ne- ↓ ↕ ± ne- Ln- + M(Hg) M(Hg) 1. G. Branica, M. Lovrić, Electrochim. Acta 42 (1997) 1247.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekti:
098-0982904-2907 - Elektroanalitička istraživanja mikrokristala i tragova otopljenih supstanci (Lovrić, Milivoj, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Milivoj Lovrić (autor)


Citiraj ovu publikaciju:

Lovrić, Milivoj
Cyclic voltammetry of the second order CE mechanism at the thin mercury film covered stationary planar electrode // book of abstracts / Ignacio González, Yunny Meas (ur.).
Queretaro, Meksiko: ISE Meksiko, 2013. str. 372-372 (poster, međunarodna recenzija, sažetak, znanstveni)
Lovrić, M. (2013) Cyclic voltammetry of the second order CE mechanism at the thin mercury film covered stationary planar electrode. U: Ignacio González, Y. (ur.)book of abstracts.
@article{article, author = {Lovri\'{c}, Milivoj}, editor = {Ignacio Gonz\'{a}lez, Y.}, year = {2013}, pages = {372-372}, keywords = {cyclic voltammetry}, title = {Cyclic voltammetry of the second order CE mechanism at the thin mercury film covered stationary planar electrode}, keyword = {cyclic voltammetry}, publisher = {ISE Meksiko}, publisherplace = {Queretaro, Meksiko} }
@article{article, author = {Lovri\'{c}, Milivoj}, editor = {Ignacio Gonz\'{a}lez, Y.}, year = {2013}, pages = {372-372}, keywords = {cyclic voltammetry}, title = {Cyclic voltammetry of the second order CE mechanism at the thin mercury film covered stationary planar electrode}, keyword = {cyclic voltammetry}, publisher = {ISE Meksiko}, publisherplace = {Queretaro, Meksiko} }




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