Electrochemical Sensor based on Imprinted Sol-Gel Polymer on Au NPs-MWCNTs-CS Modified Electrode for the Determination of Acrylamide
| Autor: | Yan Liu, Xing-Bo Shi, Lu-Gang Mao, Yuan-Liang Wang, Zao He, Yang Yang, Xia Liu |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Detection limit Materials science 010401 analytical chemistry Molecularly imprinted polymer Polymer 010402 general chemistry 01 natural sciences Applied Microbiology and Biotechnology 0104 chemical sciences Analytical Chemistry Electrochemical gas sensor chemistry.chemical_compound Chemical engineering chemistry Colloidal gold Acrylamide Polymer chemistry Electrode Safety Risk Reliability and Quality Safety Research Food Science Sol-gel |
| Zdroj: | Food Analytical Methods. 9:114-121 |
| ISSN: | 1936-976X 1936-9751 |
| DOI: | 10.1007/s12161-015-0172-0 |
| Popis: | A sensitive molecularly imprinted electrochemical sensor was successfully constructed for the detection of acrylamide (AM). It is based on a glassy carbon electrode modified with a composites prepared from gold nanoparticles, multiwalled carbon nanotubes, and chitosan along with a sol-gel-based molecularly imprinted polymer (MIP) film. The latter was prepared using AM as the template molecule, 3-aminopropyltrimethoxysilane as the functional monomer, and tetraethoxysilane as the cross-linker. The MIP sensor showed a linear current response to the target AM concentration in the range from 0.05 to 5 μg mL−1 at a working voltage of 0–0.4 V with a lower detection limit of 0.028 μg mL−1 (S/N = 3). It was successfully applied to the detection of AM in potato chips. HPLC analysis was also conducted to detect AM in the same samples to demonstrate the applicability of the electrochemical MIP sensor. |
| Databáze: | OpenAIRE |
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