Reusable Boron-Doped Diamond Electrodes for the Semi-Continuous Detection of Tetrabromobisphenol A

Abstract

It is of great importance to measure tetrabromobisphenol A (TBBPA) owing to its high toxicity and wide existence in the environment. In this paper, an electrochemical sensor based on boron-doped diamond (BDD) thin film was developed for the detection of TBBPA. The diamond thin film was deposited on Si substrate via filament-assisted chemical vapor deposition. Due to the great electrochemical properties, the BDD electrode could be reactivated after a pretreatment process after each measurement, which realized a continuous detection of TBBPA and solved the problem of renewal. The electrochemical pretreatment procedure was studied in order to achieve better performance. The peak current of the BDD electrode displayed a good linearity toward TBBPA concentrations ranging from 50 nM to $10~\mu \text{M}$ , and the detection limit was 27 nM (S/N = 3).