Related Experiment Video
Updated: Mar 29, 2026

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
Published on: June 1, 2012
Electrochemical determination of bisphenol A at ordered mesoporous carbon modified nano-carbon ionic liquid paste
Yonghong Li1, Xiurong Zhai2, Xinsheng Liu3
1Electrochemistry and spectroscopy analysis laboratory, School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, PR China.
Abstract:
A simple bisphenol A (BPA) sensor was successfully fabricated based on ordered mesoporous carbon CMK-3 modified nano-carbon ionic liquid paste electrode (CMK-3/nano-CILPE). The nanostructure of CMK-3 and the surface morphologies of modified electrodes were characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Electrochemical properties of the fabricated electrodes were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The fabricated sensor displayed excellent electroactivity towards bisphenol A using linear sweep voltammetry (LSV). Experimental conditions influencing the analytical performance of the modified electrode were optimized. Under optimal conditions, the oxidation peak current was proportional to BPA concentration in the range from 0.2 μM to 150 μM with a detection limit of 0.05 μM (S/N=3). This method was successfully used for determination of BPA leached from drinking bottle and plastic bag with good recoveries.
Related Concept Videos
Controlled-Potential Coulometry: Electrolytic Methods
The chosen potential...
Potentiometry: Membrane Electrodes

