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<p>A chloramphenicol (CAP) electrochemical sensor based on zinc tungstate and maghemite nanocomposites (ZnWO<sub>4</sub>/γ-Fe<sub>2</sub>O<sub>3</sub>) is proposed. First, ZnWO<sub>4</sub> and γ-Fe<sub>2</sub>O<sub>3</sub> nanomaterials were synthesized using a hydrothermal synthesis method, then compositely modified onto glassy carbon electrodes to construct electrochemical sensors for measuring CAP. Under optimal conditions, the ZnWO<sub>4</sub>/γ-Fe<sub>2</sub>O<sub>3</sub>-modified electrode exhibits a stronger reduction peak current for CAP detection than the single-component electrode and demonstrates better electrocatalytic activity. The results demonstrate that ZnWO<sub>4</sub>/γ-Fe<sub>2</sub>O<sub>3</sub>/GCE exhibits a linear detection range of 8–1000 μM and a detection limit of 1.04 μM, demonstrating good selectivity in the presence of different interferers, as well as outstanding stability and reproducibility. ZnWO<sub>4</sub>/γ-Fe<sub>2</sub>O<sub>3</sub>/GCE was used to detect of CAP in milk samples, yielding satisfactory results.</p>

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An Electrochemical Sensor Based on ZnWO4/γ-Fe2O3 for the Detection of Chloramphenicol in Milk

  • 期刊论文

  • 发表日期：

    2026年7月31日

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  • Xiaodong Tu,
  • Mingcai Yao,
  • Liang Dong

摘要

A chloramphenicol (CAP) electrochemical sensor based on zinc tungstate and maghemite nanocomposites (ZnWO4/γ-Fe2O3) is proposed. First, ZnWO4 and γ-Fe2O3 nanomaterials were synthesized using a hydrothermal synthesis method, then compositely modified onto glassy carbon electrodes to construct electrochemical sensors for measuring CAP. Under optimal conditions, the ZnWO4/γ-Fe2O3-modified electrode exhibits a stronger reduction peak current for CAP detection than the single-component electrode and demonstrates better electrocatalytic activity. The results demonstrate that ZnWO4/γ-Fe2O3/GCE exhibits a linear detection range of 8–1000 μM and a detection limit of 1.04 μM, demonstrating good selectivity in the presence of different interferers, as well as outstanding stability and reproducibility. ZnWO4/γ-Fe2O3/GCE was used to detect of CAP in milk samples, yielding satisfactory results.