多量注入イオンクロマトグラフィーによる微量亜硝酸イオンの定量 : 高交換容量イオン交換樹脂カラム使用による多量共存陰イオンの妨害除去(<特集>超微量分析のための前処理と予備濃縮)

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タイトル別名
  • Determination of trace nitrite by ion chromatography with large volume injection; Elimination of major interferences anions with high-capacity ion exchange resin column.
  • 多量注入イオンクロマトグラフィーによる微量亜硝酸イオンの定量　　高交換容量イオン交換樹脂カラム使用による多量共存陰イオンの妨害除去
  • タリョウ チュウニュウ イオン クロマトグラフィー ニ ヨル ビリョウ アショ
  • Elimination of major interferences anions with high-capacity ion exchange resin column
  • 高交換容量イオン交換樹脂力ラム使用による多量共存陰イオンの妨害除去

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抄録

Determination of trace nitrite ion by ion chromatography (IC) with large volume injection method is described. Large volume injection is an excellent concentration mode in its simplicity of instruments. Elimination of interferences from major anions in the concentration step of trace nitrite were attempted by using a large ion exchange capacity resin, the capacity of which was 100 times higher than a common ion exchange resin for IC, and direct UV detection. As a result of the various investigations for eluent conditions, chloride ion was a best eluent anion. The present method permitted to concentrate 1050 ml of a sample solution without the interferences from major anions in the concentration step and the UV detection. Chloride ion employed as an eluent anion did not interfere with the detection of nitrite ion at 210 nm. Detection limit for nitrite ion was 0.1 ppb and relative standard deviation for concentrating 20 ml of 1 ppb nitrite solution was 3.5%. Nitrite ion was determined without interferences from the major anions on the concentration of 30 ml of 1 ppb nitrite solution containing 50 ppm chloride and 10 ppm nitrate by means of the present method. Moreover, this method was applied to the determination of nitrite ion in tap water which contained chloride (7.5 ppm), nitrate (1.2 ppm) and sulfate (6.6 ppm) as major anions.

収録刊行物

  • 分析化学

    分析化学 36 (11), 702-706, 1987

    公益社団法人 日本分析化学会

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