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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104689


    Title: Fabrication of a totally renewable off-channel amperometric platform for microchip electrophoresis
    Authors: Chi-Hao Chen;Ya-Ting Lin;Meng-Shan Lin
    Keywords: Electrochemical detection;Off-channel;Off-channel microchip;Renewable electrode;Screen printed
    Date: 2015-05-18
    Issue Date: 2016-01-06 11:07:16 (UTC+8)
    Publisher: Elsevier BV
    Abstract: In this approach, a novel method to fabricate an integrated amperometric platform used in off-channel electrophoresis has been introduced. A simple screen printed protocol combining a wet etching procedure was used to define the pattern on a glass substrate, and whole electrodes were constructed by filling the conductive carbon ink into the etched cavities. A simple Teflon tape was used to align this platform with the micro-channel, and the variation of reassembling of this device can be down to 2.2% without the assistance of microscope. This device was characterized by dopamine (DA) and catechol (CA), and the width of half peak is around 4 s, even a 100 μm double T shape injection design and a 550 μm working electrode were used in this work. Under the optimum condition, this device possesses a low background with a noise level of 1.4 pA (peak to peak). The linear range for DA and CA are 0.1–100 μM (R = 0.998) and 0.2–200 μM (R = 0.996) with a theoretical plate number of 1.57 × 104 and 3.46 × 104 (plate/m), respectively.
    Relation: Analytica Chimica Acta 874 pp.33–39
    DOI: 10.1016/j.aca.2015.02.035
    Appears in Collections:[化學學系暨研究所] 期刊論文

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