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<p>Monitoring and detection of organophosphate pesticides in fresh vegetables and fruits are essential due to their increased usage and harmful effects on the environment and human health. This study presents the development and evaluation of a straightforward non-enzymatic electrochemical sensor for detecting paraoxon ethyl (PoE), one of the most widely used pesticides to protect crops from pests. We have synthesized nanostructured Co-Benzene Tricarboxylic acid (BTC) metal organic framework (MOF) by a mechanochemical method at room temperature and used it directly as an electrode material to modify&#xa0;a glassy carbon electrode (GCE). The electrochemical detection of PoE has been carried out using a Co-BTC/GCE in a phosphate-buffered saline at pH 7.0. The modified electrode displayed a remarkable electrocatalytic response towards the reduction of PoE through the appearance of a sharp peak at − 0.68&#xa0;V with high selectivity over a wide concentration range of 1–1770&#xa0;µM and a low detection limit of 0.13&#xa0;µM. Also, the sensor exhibited high stability and reproducibility, making it a promising tool for PoE detection in farm-fresh brinjal, grape, and strawberry. Thus, the developed sensor provides an affordable, sensitive, and dependable platform for pesticide detection and supporting environmental conservation initiatives.</p> Graphical Abstract <p></p>

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A swift electrochemical detection of paraoxon ethyl pesticide based on Co-BTC metal organic framework synthesized by mechanochemical method

  • 期刊论文

  • 发表日期：

    2025年7月2日

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  • C. Arul,
  • S. B. Mayil Vealan,
  • P. Archana,
  • C. Sekar

摘要

Monitoring and detection of organophosphate pesticides in fresh vegetables and fruits are essential due to their increased usage and harmful effects on the environment and human health. This study presents the development and evaluation of a straightforward non-enzymatic electrochemical sensor for detecting paraoxon ethyl (PoE), one of the most widely used pesticides to protect crops from pests. We have synthesized nanostructured Co-Benzene Tricarboxylic acid (BTC) metal organic framework (MOF) by a mechanochemical method at room temperature and used it directly as an electrode material to modify a glassy carbon electrode (GCE). The electrochemical detection of PoE has been carried out using a Co-BTC/GCE in a phosphate-buffered saline at pH 7.0. The modified electrode displayed a remarkable electrocatalytic response towards the reduction of PoE through the appearance of a sharp peak at − 0.68 V with high selectivity over a wide concentration range of 1–1770 µM and a low detection limit of 0.13 µM. Also, the sensor exhibited high stability and reproducibility, making it a promising tool for PoE detection in farm-fresh brinjal, grape, and strawberry. Thus, the developed sensor provides an affordable, sensitive, and dependable platform for pesticide detection and supporting environmental conservation initiatives.

Graphical Abstract