用CB/TiO2修改的玻璃碳电极,用于通过电压测量和流量注射分析来灵敏地确定sumatriptan
Joanna Smajdor1, Beata Paczosa-Bator1, Małgorzata Grabarczyk2
1Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza, 30-059 Krakow, Poland.
Sensors (Basel, Switzerland)
|July 8, 2023
概括
一个在玻璃状碳电极上结合碳黑和二氧化的新型传感器提供了高度灵敏的苏马特里普坦 (SUM) 测定. 该方法精确量化了药物和生物样本中的SUM,具有出色的稳定性和低检测极限.
科学领域:
- 电化学 电化学 电化学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 苏马特里普坦 (SUM) 是一种重要的以胺为基础的药物,用于治疗偏头痛和集群头痛.
- 灵敏而准确的SUM测定对于治疗药物监测和质量控制至关重要.
研究的目的:
- 开发和验证一种新的电压测量方法,用于高度敏感的SUM测定.
- 为了研究新型玻璃碳电极的有效性,用黑碳和二氧化 (CB-TiO2 / GC) 来进行SUM分析.
主要方法:
- 使用线性扫描电压测量 (LSV) 和电化学阻抗光谱 (EIS) 的电化学表征.
- 方波电压测量 (SWV) 参数的优化,包括支持电解质,预度时间和电位.
- 验证在复杂矩阵 (如药片,尿液和血) 中确定SUM的方法.
主要成果:
- 该CB-TiO2 / GC传感器在6周内表现出卓越的重复性,灵敏性和稳定性.
- 对于SUM,实现了广泛的线性范围 (5nmol L-1到150μmol L-1) 和低检测极限 (2.9nmol L-1).
- 在真实样本 (药片,尿液,血) 中成功应用,回收良好 (94-105%).
- 在流量注入条件下,快速分析时间约为30秒.
结论:
- 开发的CB-TiO2 / GC修改电极提供了一个高度敏感,稳定和可靠的平台,用于苏马特里普坦的确定.
- 这种新的电压测量方法为在各种复杂矩阵中快速准确分析苏马特里普坦提供了有前途的方法.
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