イオンクロマトグラフィー用分離カラムの簡便な調製法

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書誌事項

タイトル別名
  • A simple preparation of separation columns for ion chromatography
  • イオン クロマトグラフィーヨウ ブンリ カラム ノ カンベン ナ チョウセイホ

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抄録

Mixed resins are prepared to make anion- and cation- separation columns for ion chromatography. The optimum conditions have been studied. Aminex®and Dowex® are mixed in the weight ratio of 1 : 2 in pure water with stirring. The mixed resins thus prepared are packed in Teflon® tubes (1mm i. d., 3mm o. d.) and are used as separation columns. For The separation of anions, Aminex A-27 (13.5μm) -Dowex 50W-X16 { (200400) mesh} is used. On a 20cm column, seven anions (F-, Cl-, NO2-, HPO42-, Br-, NO3-, and SO42-, in the mixture) can be separated in 60min with 1.0mM NaHCO3 - 2.0 mM Na2CO3 eluent at a flow rate of 1ml min-1. For the separation of cations, Aminex A-5 (13μm) -Dowex 1-X8 { (200400) mesh} is used. On a column of 13cm to 15cm, six monovalent cations (Li+, Na+, NH4+, K4+, Rb+, and Cs+, in mixture) can be separated in 100min with 5mM HCl eluent at a flow rate of 0.5ml min-1. A mixture of six monovalent (from Li+ to Cs+) and four divalent (Mg2+, Ca2+, Sr2+, and Ba2+) cationscan be separated with 1.25 mM m-phynylenediamine dihydrochloride-1.25 mM HCl eluent, that is, a single peak corresponding to monovalent cations followed by four peaks of divalent cations (on a 13cm column Ba2+ ions are eluted in 110min at a flow rate of 0.5ml min-1). The elution times are longer compared to those for the commercially available columns, but the separation profiles of both cations and anions are satisfactory.

収録刊行物

  • 分析化学

    分析化学 32 (7), 420-425, 1983

    公益社団法人 日本分析化学会

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