Li, Bowei(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China)
; Wang, Zhuo(Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China)
; Chen, Lingxin(Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China)
英文摘要:
In this study, a novel three-dimensional (3D) origami ion imprinted polymers microfluidic paper-based chip device for specific, sensitive and multiplexed detection of Cu2+ and Hg2+ ions has been proposed. In this device, the surface of the paper was activated by grafting with CdTe QDs through amino processing and formation of Cu2+ or Hg2+ IIPs and CdTe QDs complex that led to fluorescence quenching of QDs because the photo luminescent energy of QDs could be delivered to the complex. This method can realize the liquid phase of QDs@IIPs being transferred to the solid glass fiber paper and improve the portability of the device. Moreover, this platform allows to simultaneous detection of Cu2+ and Hg2+ ions with good selectivity and sensitivity. The proposed method reveals that the copper ion imprinted fluorescent sensor demonstrated a good linearity from 0.11 to 58.0 mu g/L with the detection limit of 0.035 mu g/L and the mercury ion linear range is 0.26-34.0 mu g/L with detection limit of 0.056 mu g/L. Importantly, this device can provide quantitative information conveniently and show great potential to be further extended to the detection of other metal ions for environmental monitoring and food safety field. (C) 2017 Elsevier B.V. All rights reserved.
National Defense Science and Technology Innovation Project of Chinese Academy of Sciences(CXJJ-16M254)
; Science and Technology Development Plan of Yantai(2015ZH087)
; Natural Science Research Foundation of China(21477160, 41406125)
; Fundamental Research Funds for the Central Universities in China(GK201603099)
; Shanxi Province Agricultural Science and Technology Innovation and Key Project(2016NY-181)
1.Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 3.Shaanxi Normal Univ, Coll Food Engn & Nutr Sci, Xian 710119, Shaanxi, Peoples R China
Recommended Citation:
Qi, Ji,Li, Bowei,Wang, Xinran,et al. Three-dimensional paper-based microfluidic chip device for multiplexed fluorescence detection of Cu2+ and Hg2+ ions based on ion imprinting technology[J]. SENSORS AND ACTUATORS B-CHEMICAL,2017,251:224-233.
