Issue 10, 2023
From the journal:

RSC Advances

A portable acetylcholinesterase-based electrochemical sensor for field detection of organophosphorus†

Long Wen,‡a   Jianfang Wang, ORCID logo ‡*a   Zhuoliang Liu,a   Cheng-an Tao, ORCID logo a   Jialing Rao,a   Jian Hanga  and  Yujiao Lia  

* Corresponding authors

a College of Science, National University of Defense Technology, Changsha 410073, P. R. China
E-mail: wangjianfang@nudt.edu.cn

Abstract

A portable acetylcholinesterase (AChE)-based electrochemical sensor based on a screen-printed carbon electrode (SPCE) and a miniature potentiostat was constructed for the rapid field detection of organophosphorus pesticides (OPs). Graphene (GR) and gold nanoparticles (AuNPs) were successively introduced onto SPCE for surface modification. Due to the synergistic effect of the two nanomaterials, the signal of the sensor has a significant enhancement. Take isocarbophos (ICP) as a model for chemical warfare agents (CAWs) and Ops; the SPCE/GR/AuNPs/AChE/Nafion sensor shows a wider linear range (0.1–2000 μg L−1), and a lower limit of detection (0.012 μg L−1) than SPCE/AChE/Nafion and SPCE/GR/AChE/Nafion sensors. Tests in actual fruit and tap water samples also yielded satisfactory results. Therefore, the proposed method can be used as a simple and cost-effective strategy for construction of portable electrochemical sensors for OP field detection.

Graphical abstract: A portable acetylcholinesterase-based electrochemical sensor for field detection of organophosphorus

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Article information

DOI
https://doi.org/10.1039/D2RA05383G
Article type
Paper
Submitted
27 Aug 2022
Accepted
23 Jan 2023
First published
03 Mar 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 6389-6395

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A portable acetylcholinesterase-based electrochemical sensor for field detection of organophosphorus

L. Wen, J. Wang, Z. Liu, C. Tao, J. Rao, J. Hang and Y. Li, RSC Adv., 2023, 13, 6389 DOI: 10.1039/D2RA05383G

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