Construction of a ratiometric electrochemical sensor for Bisphenol A detection by coupling nonionic surfactant-decorated conductive carbon black with ferricyanide probe

Zong-Xian Zhu; Xuan Zhang

doi:10.1016/j.talanta.2024.127084

Construction of a ratiometric electrochemical sensor for Bisphenol A detection by coupling nonionic surfactant-decorated conductive carbon black with ferricyanide probe

Talanta. 2024 Oct 21:283:127084. doi: 10.1016/j.talanta.2024.127084. Online ahead of print.

Authors

Zong-Xian Zhu¹, Xuan Zhang²

Affiliations

¹ Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China.
² Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China; National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong, 271000, China. Electronic address: xzhang@dhu.edu.cn.

PMID: 39447398
DOI: 10.1016/j.talanta.2024.127084

Abstract

In this work, a novel ratiometric electrochemical sensor for bisphenol A (BPA) detection was facilely constructed by coupling conductive carbon black (VXC-72R) with ferricyanide probe. The VXC-72R was decorated with nonionic surfactant Tween to enhance the sensitivity and coated on glassy carbon electrode (GCE), whereas K₃[Fe(CN)₆] was introduced into electrolyte solution as an internal reference probe to realize dual-signal outputs. The present ratiometric electrochemical sensor achieved a highly sensitive and selective detection of BPA in PBS solution (pH = 7.0), with a linear range of 0.08-40.0 μM and detection limit of 0.05 μM. Moreover, it has been successfully applied to the determination of BPA in real lake water and milk samples with the satisfactory recoveries rates of 94.8-102.3 %.

Keywords: Bisphenol A; Conductive carbon black; Nonionic surfactant; Ratiometric electrochemical sensor.