Electrochemical Sensor Based on Casein and Carbon Black for Bisphenol A Detection

Electrochemical Sensor Based on Casein and Carbon Black for Bisphenol A Detection

Bisphenol A (BPA) is an environmental endocrine disrupting chemical, which can lead to various adverse health effects. Aiming to develop effective tools for the detection of BPA, this work reports a low cost and stable film based on casein (CAS) and Carbon Black (CB). The proposed material (CAS‐CB)...

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Veröffentlicht in:Electroanalysis (New York, N.Y.) N.Y.), 2019-11, Vol.31 (11), p.2162-2170
Hauptverfasser: Vieira Jodar, Letícia, Orzari, Luiz Otávio, Storti Ortolani, Túlio, Assumpção, Mônica H. M. T., Vicentini, Fernando C., Janegitz, Bruno C.
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Bisphenol A
Carbon black
Casein Film
Electrochemistry
Sensor
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container_end_page 2170
container_issue 11
container_start_page 2162
container_title Electroanalysis (New York, N.Y.)
container_volume 31
creator Vieira Jodar, Letícia
Orzari, Luiz Otávio
Storti Ortolani, Túlio
Assumpção, Mônica H. M. T.
Vicentini, Fernando C.
Janegitz, Bruno C.
description Bisphenol A (BPA) is an environmental endocrine disrupting chemical, which can lead to various adverse health effects. Aiming to develop effective tools for the detection of BPA, this work reports a low cost and stable film based on casein (CAS) and Carbon Black (CB). The proposed material (CAS‐CB) showed structures of CAS surrounded by CB agglomerates observed by Scanning Electron Microscopy while Fourier Transform Infrared Spectroscopy analysis illustrated characteristic bands of casein. Cyclic Voltammetry (CV) and linear sweep voltammetry (LSV) were used to investigate the electrochemical behavior of BPA using the CAS‐CB. Under optimal conditions, LSV detection presented a limit of detection of 0.25 μmol L−1 in a linear range from 0.49 to 24 μmol L−1. Additionally, the working electrode (GC) modified by the proposed film (CAS‐CB) was applied for BPA sensing in environmental and milk samples. The results showed recoveries between 95.4 to 114 % attesting the efficiency of this new material, which has simplicity in the preparation, high conductivity, and adsorption capability.
doi_str_mv 10.1002/elan.201900176
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subjects Bisphenol A
Carbon black
Casein Film
Electrochemistry
Sensor
title Electrochemical Sensor Based on Casein and Carbon Black for Bisphenol A Detection
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