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<p>This study presents the development of a cobalt oxide-modified screen-printed carbon electrode (CoO/SPCE) for the electrochemical detection of reserpine (RES), a drug used to treat high blood pressure. The CoO/SPCE was fabricated using an optimized electrodeposition method, resulting in a sensitive and reproducible platform for RES detection. Electrochemical characterization demonstrated that the CoO/SPCE exhibited superior electrocatalytic activity, as evidenced by a notable increase in oxidation peak current compared to bare and activated SPCEs. The electrode showed a linear response to RES concentrations ranging from 2 to 100&#xa0;μM with a detection limit of 1.08&#xa0;μM. Additionally, the sensor demonstrated good stability and reproducibility with relative standard deviations (RSDs) of 5.11% and 2.72%, respectively. This work highlights the CoO/SPCE’s potential for practical pharmaceutical analysis, offering a novel approach to enhancing the sensitivity and reliability of electrochemical sensors for drug monitoring.</p> Graphical abstract <p></p>

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Cobalt oxide modified screen-printed carbon electrode for electrochemical detection of high blood pressure treating drug: reserpine

  • 期刊论文

  • 发表日期：

    2025年5月6日

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  • Chenxi Wu,
  • Shengzhou Qiu,
  • Sima Akter,
  • Shaoli Hong,
  • Huihong Liu,
  • Sakil Mahmud

摘要

This study presents the development of a cobalt oxide-modified screen-printed carbon electrode (CoO/SPCE) for the electrochemical detection of reserpine (RES), a drug used to treat high blood pressure. The CoO/SPCE was fabricated using an optimized electrodeposition method, resulting in a sensitive and reproducible platform for RES detection. Electrochemical characterization demonstrated that the CoO/SPCE exhibited superior electrocatalytic activity, as evidenced by a notable increase in oxidation peak current compared to bare and activated SPCEs. The electrode showed a linear response to RES concentrations ranging from 2 to 100 μM with a detection limit of 1.08 μM. Additionally, the sensor demonstrated good stability and reproducibility with relative standard deviations (RSDs) of 5.11% and 2.72%, respectively. This work highlights the CoO/SPCE’s potential for practical pharmaceutical analysis, offering a novel approach to enhancing the sensitivity and reliability of electrochemical sensors for drug monitoring.

Graphical abstract