Zhou Jie, Li Yaru, Li Yan, Lan Jing, Zhao Zongshan, Shi Rongguang
College of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, China.
Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety, Ministry of Agriculture and Rural Affairs, Agro-Environmental Protection Institute, Tianjin, 300191, China.
Mikrochim Acta. 2024 Feb 26;191(3):155. doi: 10.1007/s00604-024-06219-1.
A new sensor based on copper-zinc bimetal embedded and nitrogen-doped carbon-based composites (CuZn@NC) was prepared for triclosan (TCS) detection by pyrolyzing the precursor of Cu-Zn binuclear metal-organic framework (MOF). The performance for detecting TCS was evaluated using linear scanning voltammetry (LSV) and differential pulse voltammetry (DPV), and the proton and electron numbers during TCS oxidation have been proved to be one-to-one. The results indicated that CuZn@NC can present a satisfactory analysis performance for TCS detection. Under the optimized conditions, the linear response range was 0.2-600 µM and the detection limit was 47.9 nM. The sensor presented good stability (signal current dropped only 2.5% after 21 days) and good anti-interference of inorganic salts and small molecular organic acids. The good recovery (97.5-104.1%) for detecting spiked TCS in commercial products (toothpaste and hand sanitizer) suggested its potential for routine determination of TCS in real samples.
通过热解铜锌双核金属有机框架（MOF）前驱体，制备了一种基于铜锌双金属嵌入和氮掺杂碳基复合材料（CuZn@NC）的新型传感器，用于检测三氯生（TCS）。采用线性扫描伏安法（LSV）和差分脉冲伏安法（DPV）评估了检测TCS的性能，证明了TCS氧化过程中的质子和电子数为一对一。结果表明，CuZn@NC对TCS检测具有令人满意的分析性能。在优化条件下，线性响应范围为0.2 - 600 µM，检测限为47.9 nM。该传感器具有良好的稳定性（21天后信号电流仅下降2.5%）以及对无机盐和小分子有机酸的良好抗干扰能力。在商业产品（牙膏和洗手液）中加标TCS的回收率良好（97.5 - 104.1%），表明其在实际样品中常规测定TCS的潜力。
