基于增强光纤 evanescent 波的离子印记差分调制系统,用于敏感和无标签检测微量离子
Dandan Sun1, Chenfei Ma1, Guoquan Wang1
1School of Physics and Electronic Engineering, Shanxi University, Taiyuan, China.
Analytica chimica acta
|February 24, 2024
概括
一个新的光学传感器系统有效地检测到自来水中的低离子 (Ni2+) 度. 这种高灵敏度传感器使用微纤维干扰仪和布拉格格子,以实现经济高效的选择性监测.
科学领域:
- 有光学传感器的感应器.
- 纳米材料是一种纳米材料.
- 环境监测环境监测环境监测
背景情况:
- 龙头水中的离子 (Ni2+) 污染对健康构成风险.
- 现有的监测方法可能是昂贵的,缺乏敏感性.
- 世界卫生组织 (WHO) 制定了安全离子水平的标准.
研究的目的:
- 为Ni2+检测开发一种低成本,高度敏感和选择性的光学传感器.
- 为了提高性能,利用离子印制差分调制系统.
- 为了节省成本,创建一个测量功率差异而不是波长转移的系统.
主要方法:
- 一个光学系统的制造,它结合了纤维布拉格格 (FBG) 和微纤维干扰仪.
- 用聚多巴胺 (PDA) /氧化石墨烯 (GO) 薄膜覆盖干扰仪表面.
- 使用离子印记技术进行选择性的Ni2+识别.
主要成果:
- 获得了0.32nm/nM的传感器灵敏度和Ni2+的0.66nM的检测极限.
- 在低度范围内 (0-100 nM) 证明了性能.
- 在FBG功率变化和波长变化之间建立了良好的合适关系.
结论:
- 开发的系统为Ni2+监控提供了一种新,简单且具有成本效益的方法.
- 与传统系统相比,传感器具有高灵敏度,选择性和较低的成本.
- 这种方法为开发具有卓越综合性能的先进传感器提供了途径.
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