Diagnosis of copper ions in vascular tracts using a fluorine-doped carbon nanotube sensor |
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Authors: | Ly Suw Young |
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Institution: | aBiosensor Research Institute, Seoul National University of Technology, 172, Gongreung 2-dong Nowon-gu, Seoul 139-743, South Korea |
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Abstract: | The voltammetric assay of Cu(II) was investigated using a carbon nanotube electrode (CNE) and fluorine immobilized onto a carbon nanotube electrode (FCNE) in cyclic voltammetry (CV), square-wave (SW) stripping voltammetry, and chronoamperometry. Optimum SW conditions were attained at working ranges of 0.01–0.11 ng L−1 Cu(II) (11 points), and a relative standard deviation of 1.68% (RSD, n = 15) was observed at 10.0 μg L−1 Cu(II). Within a 200 s accumulation time, detection limit of 0.006 μg L−1 was attained. The life span of each electrode was more than 1 month. The sensor was applied to tap water, blood, and rat tail vascular (in vivo). It was found that the sensor could be used with an interface system in the assay of live cells and non-treated blood. |
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Keywords: | Copper Fluorine Voltammetry Vascular tract Multi-walled carbon nanotubes (MWCNTs) Chemically modified electrodes (CMEs) |
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