Design of an electrochemical polypyrrole-imprinted polymer for bisphenol A detection in aqueous media

H. E. El Yamine Sakhraoui, N. Maouche, S. Khaoulani, G. Attia, C. Zerrouki, N. Fourati

Abstract

This study concerns the design of an electrochemical sensor functionalized with a polypyrrole-molecularly imprinted polymer (PPy- MIP) for bisphenol A (BPA) detection. Here, N, N'- methylene-bis-acrylamide was chosen as the chelating agent due to its accessible carbonyl and amine groups. Extraction of BPA templates from the vicinity of the PPy-polymeric matrix was optimized by electrochemistry and Fourier Transform Infrared spectroscopy (FTIR). The limit of detection of the designed sensor was of order of 1 nM and the sensitivity was equal to (9.66 ± 0.86) µA/M respectively. The dissociation constant K_d, which provides information on the affinity between the templates and the cavities, was estimated from a combined one-site binding - Hill model. K_d was of order of (2.05 ± 0.18) 10^-9 M.

Keywords

Bisphenol A; Polypyrrole; Molecularly imprinted polymer; Electrochemical sensor; FTIR characterization

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IMEKO-TC19-2022-16.pdf

DOI

10.21014/tc19-2022.16

IMEKO TC

TC19 - Environmental Measurements

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