基于碳点的电化学传感平台,用于同时确定茶叶中的神叶素和咖啡因
Paola Di Matteo1, Alessandro Trani2, Martina Bortolami1
1Department of Basic and Applied Sciences for Engineering, Sapienza University of Rome, 00161 Rome, Italy.
Sensors (Basel, Switzerland)
|September 28, 2023
概括
一个使用碳点和基托桑改性玻璃碳电极的新型电化学传感器提供了一种简单而有选择的方法,可以在各种样本中同时检测咖啡因和西奥菲林.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 咖啡因 (CAF) 和神素 (THEO) 是广泛消费的化合物,具有显著的生理效应.
- 准确且同时确定CAF和THEO对于质量控制和治疗监测至关重要.
- 现有的分析方法可能是复杂的,耗时的或昂贵的.
研究的目的:
- 开发一种新的电化学传感器,用于同时测定咖啡因和西奥菲林.
- 为了研究用碳点-色素复合物修改的玻璃碳电极的性能.
- 为了评估传感器的分析参数,稳定性和在现实世界样本中的适用性.
主要方法:
- 用碳点 (CDs) 和酸盐 (CS) 的复合物修饰的玻璃碳电极 (GCE) 的制造.
- 在酸性介质中使用循环电压测量 (CV) 和微分脉冲电压测量 (DPV) 进行电化学表征.
- 优化传感器参数,并使用茶叶和药物样本进行验证.
- 与高性能液体染色学-电子喷射电离-质谱学 (HPLC-ESI-MS) 进行比较,以评估准确性.
主要成果:
- 开发的CDs-CS修改的GCE表现出CAF和THEO的线性度范围为1 × 10−5到5 × 10−3mol L−1.
- 对于两种分析物来说,都实现了1 × 10−6 mol L−1的低检测极限 (LOD).
- 证明了令人满意的可重复性,可重复性和存储稳定性.
- 传感器在真实样本 (茶叶和药物) 中成功确定了CAF和THEO,结果与HPLC-ESI-MS相似.
结论:
- 碳点-奇托桑改性玻璃碳电极提供了一个简单,选择性和敏感的平台,用于同时确定CAF和THEO.
- 这种电化学传感器在成本效益,便携性和易用性方面具有优势,不需要专业人员.
- 开发的方法对各种矩阵中的咖啡因和西奥菲林的常规分析和质量控制具有前景.
关键词:
在HPLC-ESI-MS中使用.咖啡因 咖啡因是一种咖啡因.用碳点修改的电极毒品 毒品 毒品 是一种药物.玻璃碳电极是一种玻璃碳电极.用丝网打印的碳电极电极.茶叶茶茶茶茶茶茶茶茶茶茶茶茶茶茶茶茶茶茶美国的Theophylline公司.更多相关视频
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