4-(2-ピリジルアゾ)レソルシノール錯体の逆相イオン対分配クロマトグラフィーとその鉄,コバルト及びニッケルの吸光光度定量への応用

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タイトル別名
  • ４‐（２‐ピリジルアゾ）レソルシノール錯体の逆相イオン対分配クロマトグラフィーとその鉄，コバルトおよびニッケルの吸光光度定量への応用
  • Reverse phase ion-pair partition chromatography of 4-(2-pyridylazo)resorcinolato complexes and its application to the spectrophotometric determination of iron, cobalt and nickel
  • 4 2 ピリジルアゾ レソルシノール サクタイ ノ ギャクソウ イオンツイ ブ

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抄録

A novel method for the separation of metal ions by reverse phase ion-pair partition chromatography is developed based on the ion-pair formation of anionic metal-4-(2-pyridylazo)resorcinolato (PAR, H2L) complexes with quaternary ammonium cation. The quantitative separation of cobalt (III)-, iron(III)-, and nickel(II)-PAR complexes was accomplished within 20 min on a 3.9 mm ×300 mm μ-Bondapak C18 column (Waters Associates), where 56.2% (v/v) methanol-water mixture containing 0.014 mol dm-3 of tetrabutylammonium bromide was used as a mobile phase in a flow rate of 0.91 cm3 min-1. These metal ions of (10-610-5)mol dm-3 level can be determined with the peak height calibration curves obtained at 254 nm using 0.04 absorbance unit full-scale. The order of the peak positions of the singly charged anions such as [CoL2]- [FeL2]- and HL- were well correlated to that of their ion-pair extraction constants.

収録刊行物

  • 分析化学

    分析化学 27 (5), 315-316, 1978

    公益社団法人 日本分析化学会

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