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An Aptasensor Based on a Flexible Screen-Printed Silver Electrode for the Rapid Detection of Chlorpyrifos

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dc.contributor.author Inam, A.K. M. Sarwar
dc.contributor.author Angeli, Martina Aurora Costa
dc.contributor.author Douaki, Ali
dc.contributor.author Shkodra, Bajramshahe
dc.contributor.author Lugli, Paolo
dc.contributor.author Petti, Luisa
dc.date.accessioned 2024-02-29T04:57:52Z
dc.date.available 2024-02-29T04:57:52Z
dc.date.issued 2022-04-02
dc.identifier.issn 1424-8220
dc.identifier.uri http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/11550
dc.description.abstract In this work, we propose a novel disposable flexible and screen-printed electrochemical aptamer-based sensor (aptasensor) for the rapid detection of chlorpyrifos (CPF). To optimize the process, various characterization procedures were employed, including Fourier transform infrared spectroscopy (FT-IR), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). Initially, the aptasensor was optimized in terms of electrolyte pH, aptamer concentration, and incubation time for chlorpyrifos. Under optimal conditions, the aptasensor showed a wide linear range from 1 to 105 ng/mL with a calculated limit of detection as low as 0.097 ng/mL and sensitivity of 600.9 µA/ng. Additionally, the selectivity of the aptasensor was assessed by identifying any interference from other pesticides, which were found to be negligible (with a maximum standard deviation of 0.31 mA). Further, the stability of the sample was assessed over time, where the reported device showed high stability over a period of two weeks at 4 °C. As the last step, the ability of the aptasensor to detect chlorpyrifos in actual samples was evaluated by testing it on banana and grape extracts. As a result, the device demonstrated sufficient recovery rates, which indicate that it can find application in the food industry. en_US
dc.language.iso en_US en_US
dc.publisher Daffodil International University en_US
dc.subject Technology en_US
dc.subject Electrochemical analysis en_US
dc.title An Aptasensor Based on a Flexible Screen-Printed Silver Electrode for the Rapid Detection of Chlorpyrifos en_US
dc.type Article en_US


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