Kinetics of the Transfer of Protonated Triazines Across the water|1,2-dichoroethane Interface

Kinetics of the transfer of protonated triazines across the water|1.2-dichloroethane interface by mean cyclic voltammetry and electrochemical impedance spectroscopy was studied. The transfer Gibbs energy (ΔGt,o, w→o) and the apparent rate constants (ks) across the liquid-liquid interface for atrazin...

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Bibliographic Details
Published inInternational journal of electrochemical science Vol. 11; no. 4; pp. 2927 - 2937
Main Authors Velázquez-Manzanares, Miguel, Amador-Hernández, Judith, de la Garza Rodriguez, Iliana M., Colunga Urbina, Edith M., Sanchez, Faustino Canseco
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2016
Subjects
ion transfer
ITIES
Kinetic process
Triazines
Triazines
ion transfer
Kinetic process
ITIES
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Summary:Kinetics of the transfer of protonated triazines across the water|1.2-dichloroethane interface by mean cyclic voltammetry and electrochemical impedance spectroscopy was studied. The transfer Gibbs energy (ΔGt,o, w→o) and the apparent rate constants (ks) across the liquid-liquid interface for atrazine, ametryn, terbutryn and prometryn were evaluated. The results showed that hydrophobicity and the molecular size of these herbicides play an important role in the kinetics values. Thus the atrazine (smaller molecular dimensions) have larger ks value compared to the ametryn, terbutryn and prometryn (larger molecular dimensions). The explanation of this difference is in the structural ability of the molecule to protect the charged group which is the one responsible for transporting the current across the interface. The present study can be an important approach to help understand the permeation kinetics of molecules across biological membranes.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)16152-9