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Fiber optic cadmium ion sensors based on functionalization of a magnetic ion-imprinted polymer

Shen, Tao, Yang, Tianyu, Feng, Yue, Liu, Xin, Liu, Chi, Yuan, Weixiang, Wu, Haodong, Wang, Chao (2024) Fiber optic cadmium ion sensors based on functionalization of a magnetic ion-imprinted polymer. The Analyst, 149 (8). pp. 2236-2243. ISSN 0003-2654. E-ISSN 1364-5528. (doi:10.1039/d3an02067c) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:105242)

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https://doi.org/10.1039/d3an02067c

Abstract

Cadmium poisoning is a chronic accumulation process, and long-term drinking of even low cadmium content water will cause kidney damage, so an ultra-low detection limit is particularly important. However, at the present stage, the traditional detection method cannot reach a sufficiently low detection limit, the response time is too long, and the cost of detection is very high, so that real-time measurement cannot be realized. Therefore, the traditional cadmium ion detection method has a slow response and an insufficient detection limit. This paper presents a fiber optic cadmium ion sensor functionalized based on an Fe3O4@SiO2@CS magnetic ion imprinting polymer (M-IIP). The sensor is based on the coupling characteristics of the optical microfiber coupler (OMC) cone region to achieve a highly sensitive response to the change in the cadmium ion concentration. M-IIP materials were prepared by surface imprinting polymerization to achieve low cross-sensitivity and thus improve the detection limit of the sensor. The results show that the developed fiber sensor has high specificity and a rapid response to cadmium ions. The experimental limit of detection (LOD) reached 0.051 nM within 0-1 μM with a response time of less than 50 s. Moreover, the proposed fiber cadmium ion sensor exhibits excellent performance in terms of sensitivity, stability, repeatability and biocompatibility.

Item Type: Article
DOI/Identification number: 10.1039/d3an02067c
Uncontrolled keywords: Electrochemistry, Spectroscopy, Environmental Chemistry, Biochemistry, Analytical Chemistry
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Funders: National Natural Science Foundation of China (https://ror.org/01h0zpd94)
SWORD Depositor: JISC Publications Router
Depositing User: JISC Publications Router
Date Deposited: 13 Mar 2024 15:04 UTC
Last Modified: 05 Nov 2024 13:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/105242 (The current URI for this page, for reference purposes)

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