CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
Department of Polymer Chemistry, Yantai Engineering & Technology College, Yantai 264006, China.
Analyst. 2022 Aug 8;147(16):3756-3763. doi: 10.1039/d2an00896c.
Ion imprinting technology was integrated on a rotational microfluidic paper- and cloth-based hybrid chip for the sensitive and selective detection of hexavalent chromium (Cr(VI)) ions. The rotational microfluidic hybrid chip consisted of CdTe quantum dot based ion imprinting fluorescence sensing cloth and three layers of paper. Users can collect fluorescence signals conveniently rotating the paper layer to expose the corresponding cloth-based sensing component. One microfluidic hybrid chip can realize the four-set multiplexed detection of Cr(VI) ions, with each set providing three parallel measurements. Furthermore, the quantitative determination of Cr(VI) ions can be achieved substituting the calculated fluorescence quenching value into the linear calibration curve. The ion imprinting fluorescence sensing microfluidic hybrid chip provides a simple, efficient, and user-friendly device for Cr(VI) ion detection. Moreover, it might be further adapted for other sensing systems and the point-of-care testing of pollutants in combination with portable instruments or smartphones.
离子印迹技术被集成到旋转微流控纸基和布基混合芯片上，用于敏感和选择性检测六价铬（Cr(VI)）离子。旋转微流控混合芯片由基于 CdTe 量子点的离子印迹荧光传感布和三层纸组成。使用者可以通过旋转纸层方便地收集荧光信号，以暴露相应的布基传感组件。一个微流控混合芯片可以实现 Cr(VI)离子的四组复用检测，每组提供三个平行测量。此外，通过将计算出的荧光猝灭值代入线性校准曲线，可以实现 Cr(VI)离子的定量测定。离子印迹荧光传感微流控混合芯片为 Cr(VI)离子检测提供了一种简单、高效、用户友好的装置。此外，它还可以与便携式仪器或智能手机结合，应用于其他传感系统和现场即时检测污染物。
