Study on Aptasensors Modified by Ionic Liquid-FeO Based on Microarray Electrodes for Tetracycline Detection

Résumé fourni par la source

Aptasensors modified by ionic liquid (IL)-ferroferric oxide(Fe3O4) based on the microarray electrodes were developed for the detection of tetracycline. The aptasensor was prepared by dropping ionic liquid-ferroferric oxide mixture on a microarray electrode surface. The mixture exhibited a significant synergistic effect towards the proposed aptasensor. Ionic liquid and ferroferric oxide as the nanocomposites mediator possess the advantage of good electrical conductivity and fast response speed.The electrochemical properties of the modified processes were characterized by electrochemical impedance spectroscopy (EIS). Different concentration of tetracyclines were detected with the fabricated aptasensor. Under the optimized conditions, the proposed aptasensor provided high sensitivity and a low detection limit (1×10-9M). In addition, it was successfully used to detect the tetracyclines in a real sample.

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