Voltammetric sensing of triclosan in the presence of cetyltrimethylammonium bromide using a cathodically pretreated boron-doped diamond electrode
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2018-10-21 |
| Journal | International Journal of Environmental & Analytical Chemistry |
| Authors | Yavuz Yardım, Nurcan Alpar, ZĂŒhre ĆentĂŒrk |
| Institutions | Van YĂŒzĂŒncĂŒ Yıl Ăniversitesi |
| Citations | 28 |
Abstract
Section titled âAbstractâIn the present study, a simple, cheap and sensitive electrochemical method based on a cathodically pretreated boron-doped diamond (CPT-BDD) electrode is described for the detection of triclosan with the cationic surfactant (cetyltrimethylammonium bromide, CTAB) media. The oxidation of triclosan was irreversible and exhibited an adsorption controlled process. The sensitivity of the adsorptive stripping voltammetric measurements was significantly improved with addition of CTAB. Using square-wave stripping mode, a linear response was obtained for triclosan determination in Britton-Robinson buffer solution at pH 9.0 containing 2.5 Ă 10â4 M CTAB at around + 0.67 V (vs. Ag/AgCl) (after 30 s accumulation at open-circuit condition). The method could be used in the range of 0.01-1.0 ÎŒg mLâ1 (3.5 Ă 10â8-3.5 Ă 10â6 M), with a detection limit of 0.0023 ÎŒg mLâ1 (7.9 Ă 10â9 M). The feasibility of the proposed method for the determination of triclosan in water samples was checked in spiked tap water.