Integrated ion imprinted polymers-paper composites for selective and sensitive detection of Cd(II) ions

• Published in: Journal of hazardous materials Vol. 333; pp. 137 - 143
• Main Authors: Huang, Kai, Chen, Ying, Zhou, Feng, Zhao, Xiaoya, Liu, Jiafa, Mei, Surong, Zhou, Yikai, Jing, Tao
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 05.07.2017
• Subjects: Cadmium ions; Colorimetric detection; Ion-imprinted polymers; Paper sensor; Water monitoring; Cadmium ions; Paper sensor; Water monitoring; Ion-imprinted polymers; Colorimetric detection
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2017.03.035

•IIPs are first grafted on the low-cost A4 print paper to develop an integrated paper-based device.•As an imprinted composite, the adsorption capacity is 155.2mgg–1 and the imprinted factor is more than 3.0.•As an analytical method, the limit of detection is 0.4ngmL–1.•Based on the water quality standards, it could be used to determine Cd(II) ions in drinking water. Paper-based sensor is a new alternative technology to develop a portable, low-cost, and rapid analysis system in environmental chemistry. In this study, ion imprinted polymers (IIPs) using cadmium ions as the template were directly grafted on the surface of low-cost print paper based on the reversible addition-fragmentation chain transfer polymerization. It can be applied as a recognition element to selectively capture the target ions in the complex samples. The maximum adsorption capacity of IIPs composites was 155.2mgg–1 and the imprinted factor was more than 3.0. Then, IIPs-paper platform could be also applied as a detection element for highly selective and sensitive detection of Cd(II) ions without complex sample pretreatment and expensive instrument, due to the selective recognition, formation of dithizone-cadmium complexes and light transmission ability. Under the optimized condition, the linear range was changed from 1 to 100ngmL–1 and the limit of detection was 0.4ngmL–1. The results were in good agreement with the classic ICP-MS method. Furthermore, the proposed method can also be developed for detection of other heavy metals by designing of new IIPs.