化学
超细纤维
离子
戒指(化学)
激光器
分析化学(期刊)
纳米技术
光学
色谱法
有机化学
物理
材料科学
作者
Shi Qiu,B. K. Chang,Liang Chai,Wenjia Nie,Lijiao Zu,Yutao Liu,Ying Han,Wei Wang,Xinghu Fu,Jinhui Yuan,Qiang Wu
出处
期刊:Talanta
[Elsevier BV]
日期:2025-07-03
卷期号:297 (Pt A): 128547-128547
标识
DOI:10.1016/j.talanta.2025.128547
摘要
As a common heavy metal pollutant, Ni2+ necessitates a rapid, sensitive, and accurate detection method to mitigate its impact on human health and the environment. This study developed a U-shaped single mode-tapered four core-single mode (STFS) based fiber ring laser (FRL) sensor coated with Ni2+ ion-imprinted chitosan (Ni2+-II-CS) for Ni2+ detection. Experimental results demonstrate that the average spectral stability in deionized water is 0.016 nm over 60 min. The detection time for Ni2+ is less than 8 min, with a limit of detection (LoD) as low as 1 nM. The proposed U-shaped STFS-based FRL sensors also show good selectivity, displaying limited cross-reactivity to other common heavy metal ions, including Cu2+, Cr2+, Pb2+, and Cd2+. Additionally, the analytical findings from pond and tap water specimens demonstrate wavelength shifts of -23.30 % and -27.06 %, respectively, when compared with measurements in deionized water. These findings indicate that the proposed microfiber sensor may have potential applications in heavy metal ion detection and environmental monitoring.
科研通智能强力驱动
Strongly Powered by AbleSci AI