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Rapid isolation and determination of bisphenol A in complicated matrices by magnetic molecularly imprinted electrochemical sensing.
- Source :
-
Analytical & Bioanalytical Chemistry . 2021, Vol. 413 Issue 2, p389-401. 13p. - Publication Year :
- 2021
-
Abstract
- Because of its widespread distribution in the environment, bisphenol A (BPA) has become a global concern as an endocrine disruptor and a threat to human health through the food chain. Thus an efficient determination method is urgently needed for monitoring the levels of BPA. Herein, a novel electrochemical technique for the detection of BPA was performed by synchronous extraction and pre-concentration of BPA onto magnetic molecularly imprinted polymer (BMMIP), with subsequent readout on a magneto-actuated glassy carbon electrode (MGCE) by differential pulse voltammetry. Compared to the current methods of BPA determination, this BMMIP-based electrochemical sensor (BMMIPs@MGCE) not only simplifies the sample handling procedures substantially, without filtration, centrifugation, or other complex operations, but also can be easily renewed by a controllable magnetic field. As a sensor component, the core–shell BMMIPs exhibited excellent binding capacity (Qe = 82.5 mg g−1), short adsorption equilibrium time (30 s), and outstanding selectivity (k′ = 7.239) towards BPA, as well as stability and recyclability. Importantly, the BMMIPs@MGCE sensor was successfully applied for the on-site monitoring and rapid detection of BPA in complicated real-world specimens, with good recoveries (81.31–119.77%) and a low limit of detection (0.133 μmol L−1). Therefore, the stable and low-cost BMMIPs@MGCE sensor provides a new approach for the rapid determination of BPA in the field of environmental control and food safety. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16182642
- Volume :
- 413
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Analytical & Bioanalytical Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 148117759
- Full Text :
- https://doi.org/10.1007/s00216-020-03006-8