Nowadays, resorcinol (RC) has been widely applied in the chemical and pharmaceutical industries. However, the electrochemical detection technique of RC still features some significant drawbacks, for instance, a low sensitivity. Hence, in the present work, a glass carbon electrode was developed for the electrochemical detection of RC with good specificity and stability, through modifying the glass carbon electrode (GCE) by polyphenol oxidase (PPO), an NH₂-SBA-15 mesoporous material (NH₂-SBA-15), L-tyrosine (L-Tyr) and gold nano-particles (AuNPs). After being successively modified by AuNPs, L-Tyr, NH₂-SBA-15 and PPO, the constructed PPO/NH₂-SBA-15/L-Tyr/AuNPs/GCE was used to discriminate RC from ions and other common micromolecules, which showed a fairly good specificity and stability. The proposed electrochemical detection method features a linear range of from 0.5 to 21.0 μM with a LOD down to 0.15 μM, revealing a better sensitivity than the existing methods. It is worth mentioning that the proposed PPO/NH₂-SBA-15/L-Tyr/AuNPs/GCE has been successfully used as an electrochemical probe for the RC assay in domestic sewage.

如今，间苯二酚（RC）已广泛应用于化工和制药行业。然而，RC的电化学检测技术仍然存在一些显着的缺点，例如灵敏度低。因此，在目前的工作中，通过用 NH ₂ -SBA-15 介孔材料多酚氧化酶 (PPO) 对玻璃碳电极 (GCE) 进行改性，开发了一种用于电化学检测 RC 的玻璃碳电极，具有良好的特异性和稳定性。(NH ₂ -SBA-15)、L-酪氨酸 (L-Tyr) 和金纳米颗粒 (AuNPs)。经AuNPs、L-Tyr、NH ₂ -SBA-15和PPO依次修饰后，构建的PPO/NH ₂-SBA-15/L-Tyr/AuNPs/GCE 用于区分 RC 与离子和其他常见小分子，显示出相当好的特异性和稳定性。所提出的电化学检测方法的线性范围为 0.5 到 21.0 μM，LOD 低至 0.15 μM，显示出比现有方法更好的灵敏度。值得一提的是，所提出的 PPO/NH ₂ -SBA-15/L-Tyr/AuNPs/GCE 已成功用作生活污水中 RC 测定的电化学探针。