稳定且可重复的MIP-ECL传感器,用于超敏感且准确的雌激素定量检测
Jie Cao1,2,3,4, Xiao-Ying Chen5
1Scientific Research and Experiment Center, Fujian Police College, Fuzhou, China.
Frontiers in bioengineering and biotechnology
|February 26, 2024
概括
开发了一种新的电化学发光传感器,用于敏感和选择性检测雌激素 (E1),这是一种重要的激素和环境污染物. 这种快速的现场方法在临床和环境样本中准确量化E1.
科学领域:
- 电化学 电化学 电化学
- 生物传感器是一种生物传感器.
- 环境科学 环境科学
背景情况:
- 雌激素 (E1) 是一种具有重要的内源性雌激素,具有关键的生理作用.
- 此外,E1也是水系统中普遍存在的环境内分泌干扰物.
- 对于临床和环境监测都需要敏感,快速和具有成本效益的现场E1检测方法.
研究的目的:
- 开发一种新的分子印记聚合物电化学发光 (MIP-ECL) 传感器,用于对雌激素 (E1) 的选择性和敏感性测定.
- 为了在临床和环境水样中快速地在现场定量E1.
主要方法:
- 一个Ru(bpy)32+/MWCNTs/Nafion/gold电极系统的制造.
- 用分子印记膜 (MIP) 修改电极,使用sol-gel方法进行E1识别.
- 利用碳氧化多壁碳纳米管 (MWCNT-COOH) 来增强电极功能和电子转移.
主要成果:
- 开发的MIP-ECL传感器在E1检测方面表现出高灵敏度和选择性.
- 实现了E1的广泛线性检测范围,从0.1μg/L到200μg/L,具有高相关系数 (R2 = 0.999).
- 获得了0.0047μg/L的低检测极限,并与LC-MS/MS相比验证了准确性,相对偏差<4.1%.
结论:
- 制造的MIP-ECL传感器提供了一个高度灵敏,选择性和准确的平台,用于现场E1测定.
- 这种方法为临床诊断和对雌激素污染环境监测提供了宝贵的工具.
- 通过MWCNTs增强的MIP和ECL技术的整合,显著提高了传感器性能.
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