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    National Tsing Hua University Institutional Repository > 原子科學院  > 生醫工程與環境科學系 > 期刊論文 >  On-line enhancement and separation of nanoparticles using capillary electrophoresis


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/40226


    Title: On-line enhancement and separation of nanoparticles using capillary electrophoresis
    Authors: Lin KH;Chu TC;Liu FK
    教師: 朱鐵吉
    Date: 2007
    Publisher: 0021-9673
    Keywords: capillary electrophoresis
    NANOCLUSTERS
    PRECONCENTRATION
    SIZED PARTICLES
    SAMPLE STACKING
    OPTICAL-PROPERTIES
    SILVER NANOPARTICLES
    RAMAN-SCATTERING
    GOLD NANOPARTICLES
    ZONE-ELECTROPHORESIS
    MICELLAR ELECTROKINETIC CHROMATOGRAPHY
    on-line enhancement
    separation
    nanoparticles
    Abstract: ©2007 Elsevier - We describe a rapid, simple, and highly efficient capillary electrophoresis (CE)-based method for the analysis of nanoparticles (NPs). In this study, we used the reversed electrode polarity stacking mode (REPSM) of CE to assess the feasibility of enhancing the detection of Au NPs and Au/Ag NPs, optimizing parameters such as the length of time for which the REPSM was applied, the concentrations of the buffer and the sodium dodecylsulfate (SDS) surfactant, and the pH. Under the optimized on-line enhancement conditions [buffer: SDS (40 mM) and 3-cyclohexylamino-1- propanesulfonic acid (CAPS; 10 mM) at pH 10.0; applied voltage: 20 kV; REPSM applied for 24 s], the detection limits of the An NPs and Au/Ag NPs increased by ca. 30- and 140-fold, respectively. In addition, when the NPs were subjected to on-line enhancement and separation by CE using diode array detection (DAD), this approach allowed chemical characterization of the NP species. Our results suggest that such CE analyses will be useful for accelerating the rates of fabrication and characterization of future nanomaterials.
    URI: http://www.elsevier.com/
    Elsevier
    http://nthur.lib.nthu.edu.tw/handle/987654321/40226
    Appears in Collections:[生醫工程與環境科學系] 期刊論文

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