通过电化学激活印碳电极与导电良好的基电解质相结合的首个阿西克洛维尔确定程序
Katarzyna Tyszczuk-Rotko1, Katarzyna Staniec1, Damian Gorylewski1
1Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland.
Sensors (Basel, Switzerland)
|February 24, 2024
概括
一种使用电化学激活印碳电极 (aSPCE) 的新型电压测量方法使得高度敏感的阿西克洛维尔 (ACY) 检测成为可能. 这种技术实现了在药品中ACY量化检测的最低检测极限.
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:
- 乙克洛维尔 (ACY) 是一种重要的抗病毒药物,需要敏感的检测方法.
- 现有的ACY测定电压测量技术在灵敏度和检测极限方面存在局限.
- 电极的电化学激活为增强分析性能提供了潜力.
研究的目的:
- 开发一种新的,高度敏感的电压测量程序,用于微量测定阿西克洛维尔 (ACY).
- 在ACY分析中首次使用电化学激活印碳电极 (aSPCE).
- 建立一种可靠的方法,用于制药配方中的ACY量化.
主要方法:
- 通过循环电压测量 (CV) 在NaOH溶液中电化学激活商用丝印碳电极 (SPCE).
- 使用激活电极 (aSPCE) 的微分脉冲吸附剥离电压测量 (DPAdSV) 方法的开发.
- 优化支电解质组成 (CH3COONH4,CH3COOH,NH4Cl) 以提高导电性和灵敏度.
主要成果:
- 电化学激活显著降低了电荷转移电阻,增加了活性表面积,并改善了电子转移动力学.
- 开发的DPAdSV程序显示了ACY的异常低的检测极限 (0.12nmol L-1).
- 获得了广泛的线性范围 (0.5-1000.0 nmol L-1) 和高灵敏度 (90.24 nA nmol L-1).
- 在商用药品样本中成功应用确定阿西克洛维尔的方法.
结论:
- 使用电化学激活的SPCE的新型电压测量程序提供了更高的灵敏度和较低的检测极限来确定阿西克洛维尔.
- 该方法为制药产品中阿西克洛维尔的质量控制提供了强大而有效的工具.
- 这些发现突出了电化学激活电极在复杂矩阵中敏感的微量分析的潜力.
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