軸方向分散を抑えた陽イオン交換モジュールとイオンクロマトグラフィーへの応用

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書誌事項

タイトル別名
  • Axial Dispersion-Reduced Cation Exchange Module and Its Application to Ion Chromatography
  • ジク ホウコウ ブンサン オ オサエタ ヨウイオン コウカン モジュール ト イオンクロマトグラフィー エ ノ オウヨウ

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抄録

The suppressor used in ion chromatography is a module placed between the separation column and conductivity detector. The axial dispersion of the sample solution in the suppressor causes a decline of detection sensitivity due to the broadening of the detection peaks. In this paper, we describe a monofilament inserted Nafion tube-type suppressor for anion analysis, which has an axial dispersion-reduced structure. A standard solution containing fluoride, formate, chloride, nitrite, nitrate, and sulfate was measured by means of an ion chromatograph with the fabricated suppressor. The number of theoretical plates and resolution were, respectively, 1.6 to 2.9 times and 1.3 to 1.8 times higher for the fabricated suppressor than a commercially available electrolytic suppressor. These results suggest that the fabricated suppressor has less axial dispersion of the sample than the electrolytic suppressor. In addition, the background level of the conductivity signal with the fabricated suppressor was suppressed to almost the same level as the electrolytic suppressor.

収録刊行物

  • FIA研究懇談会会誌

    FIA研究懇談会会誌 37 (1), 3-, 2020

    公益社団法人 日本分析化学会　フローインジェクション分析研究懇談会

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