Large-Volume Sample Sweeping with a High Theoretical Plate Number Using a Coupled-Capillary in Capillary Electrophoresis

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A large-volume sample injection (> 5 µL) with an extremely high theoretical plate number (<i>N</i> > 10<sup>7</sup>) was achieved when the sweeping-MEKC mode and a coupled-capillary (100 - 50 µm i.d.) were simultaneously used in a capillary electrophoresis (CE) separation. A low-cost and compact violet-LED (∼2 mW) was used as the fluorescence excitation source. As a result, the theoretical plate numbers of the detected peaks (two model compounds: naphthalene-2,3-dicarboxaldehyde derivatized-dopamine and -norepinephrine) were 1.0 × 10<sup>7</sup> and 7.4 × 10<sup>6</sup>, respectively. The limits of detection (at <i>S/N</i> = 3) of these were determined to be 2.8 × 10<sup>-10</sup> M (92 ppt) and 2.3 × 10<sup>-10</sup> M (83 ppt), respectively.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 22(4), 557-561, 2006-04-10

    The Japan Society for Analytical Chemistry

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各種コード

  • NII論文ID(NAID)
    10018123833
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    7871961
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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