A novel electrochemical sensor for detecting heavy metal ions in seafood was developed to address food safety concerns. The sensor integrates graphene oxide into NH₂-UiO-66 loaded nanofiber carbon aerogel, enhanced its three-dimensional conductive network and effective active surface area (0.34 cm²), which improved ion enrichment and oxidation-reduction reaction rates. Using the Box-Behnken design, the sensor was optimized to detect cadmium and lead with LODs of 0.16 μg·L⁻¹ and 0.07 μg·L⁻¹ in the 1 to 150 μg·L⁻¹ linear range. Applied to real seafood samples, the sensor showed results consistent with ICP-OES, confirmed its reliability in complex substrates. This approach offered a promising, low-cost solution for real-time monitoring of heavy metal contamination in seafood, ensuring public food safety.

中文翻译：

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氧化石墨烯负载的 MOFs-纳米纤维碳气凝胶/SPCE 可同时检测海鲜中的 Cd2+ 和 Pb2+


为解决食品安全问题，我们开发了一种用于检测海鲜中重金属离子的新型电化学传感器。该传感器将氧化石墨烯集成到负载 NH 2-UiO-66 的纳米纤维碳气凝胶中，增强了其三维导电网络和有效有效表面积 （0.34 cm²），从而提高了离子富集和氧化还原反应速率。利用 Box-Behnken 设计，对传感器进行优化，以检测 LOD 为 0.16 μg·L⁻¹ 和 0.07 μg·L⁻¹ 在 1 至 150 μg·L⁻¹ 线性范围。该传感器应用于真实的海鲜样品，显示出与 ICP-OES 一致的结果，证实了其在复杂基材中的可靠性。这种方法为实时监测海鲜中的重金属污染提供了一种有前途的低成本解决方案，确保公共食品安全。