Electroreduction of the antifouling agent TCMTB and its electroanalytical determination in tannery wastewaters

The electrochemical reduction of antifouling agent 2-thiocyanomethylthiobenzothiazole (TCMTB) was investigated by cyclic and pulse differential voltammetry. The irreversible electrode reduction of TCMTB proceeded by ECEC reaction mechanism by two electrons transfer with one irreversible wave. Upon t...

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Bibliographic Details
Published in:Talanta (Oxford) 2005-10, Vol.67 (4), p.682-685
Main Authors: Meneses, Elaine S., Arguelho, Maria Lara P.M., Alves, José P.H.
Format: Article
Language:English
Subjects:
Analysis methods
Analytical chemistry
Applied sciences
Chemistry
Electrochemical methods
Exact sciences and technology
Fungicide
Natural water pollution
Pollution
Pulse differential voltammetry
TCMTB
Wastewater analysis
Water treatment and pollution
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Summary:The electrochemical reduction of antifouling agent 2-thiocyanomethylthiobenzothiazole (TCMTB) was investigated by cyclic and pulse differential voltammetry. The irreversible electrode reduction of TCMTB proceeded by ECEC reaction mechanism by two electrons transfer with one irreversible wave. Upon the basis of electrochemical evidence, the electrodic reaction mechanism was suggested to formation of mercaptobenzothiazole (MTB) in solution. Subsequently, a pulse differential method is described for the formation of TCMTB based on this electroreduction. Having been obtained a detection limit of 1.0 × 10 −7 mol L −1 and recovery to 98% to concentration of 2.0 × 10 −6 mol L −1. Therefore, the proposed method in this study is practical, sensitive and accurate for the analysis of TCMTB in tannery wastewater samples.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2005.01.058