一次性SERRS检测水系统中的铁和酸度
Irene Calderón González1, Robbert Schuett2, Gerwin Chilla2
1Department of Physical and Inorganic Chemistry, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
ACS applied materials & interfaces
|January 14, 2026
概括
这项研究引入了一种新的光学传感器平台,用于同时检测Fe (II) 离子和监测水中的pH值. 表面增强共振拉曼散射 (SERRS) 传感器克服pH干扰,用于可靠的金属离子分析.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 频谱学是一种光谱学.
背景情况:
- 光学离子传感对便携式分析具有前景,但受到pH干扰的影响.
- 对于传感至关重要的金属-连接物相互作用对pH值波动敏感.
- 准确的现场监测金属离子如Fe (II) 对环境和生物应用至关重要.
研究的目的:
- 开发一个多探头表面增强共振拉曼散射 (SERRS) 平台,用于同时测量Fe (II) 量和在现场读取pH值.
- 为了克服光学离子传感中的pH依赖干扰.
- 为了使在水性介质中进行强大可靠的金属离子分析.
主要方法:
- 用银纳米颗粒涂覆的聚乙烯珠子的制造.
- 功能化与 (Phen) 用于Fe (II) 检测和4-mercaptobenzoic acid (MBA) 用于pH传感.
- 在SERRS分析中使用532nm的共振激发.
主要成果:
- 实现了低至30ppb的Fe (II) 检测,具有高选择性.
- 证明了Fe (II) 和pH的同时和独立量化.
- 该MBA探头有效地解了pH效应,防止在性pH下错误的Fe (II) 读数.
结论:
- 开发的双传感SERRS平台为光学离子传感中的pH干扰提供了强大的解决方案.
- 这一策略使复杂的水系统中金属离子的精确,时间解析的监测成为可能.
- 为环境和生物样本中金属离子的便携式,可靠的现场分析铺平了道路.
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