Paper-based microfluidic colorimetric sensor fabricated by laser printing for portable detection of Cu2＋
YANG Yinglei 1,2， LI Ming 1,3， JIANG Xiangyang2， ZHANG Tian1,2,3,4,5,6
(1. Sanya Science and Education Innovation Park， Wuhan University of Technology， Sanya 572024， Hainan， China；2. School of Materials Science and Engineering， Wuhan University of Technology， Wuhan 430070， China；3. School of Resources and Environmental Engineering， Wuhan University of Technology， Wuhan 430070， China；4. School of Chemistry， Chemical Engineering and Life Sciences， Wuhan University of Technology， Wuhan 430070， China；5. Shaoxing Institute for Advanced Research ， Wuhan University of Technology， Shaoxing 312000， Zhejiang， China；6. Advanced Engineering Technology Research Institute of Zhongshan City， Wuhan University of Technology， Zhongshan 528400， Guangdong， China)
Abstract：A fast， convenient and sensitive method is needed for on-site detection of copper ion concentrations in the water environment. In this study， based on the laser printing method， toner was printed on qualitative filter paper to construct the microfluidic channels. Using cuprizone functionalized qualitative filter paper， the paper-based colorimetric sensor could be used for the detection of copper ions in the water environment. The experimental results show that through the smartphone and developed color information extraction program， the detection limit (LOD) of Cu2＋ in drinking water of paper-based microfluidic colorimetric sensor was 0.11 mg·L－1 with the quantitative limit (LOQ) of 0.35 mg·L－1. The prepared colorimetric sensor exhibits the advantages of simple manufacturing steps， good stability， low cost and rapid detection， and shows its application potential in on-site environmental monitoring.
2024, Vol. 58 
