液体クロマトグラフィーによる湖沼水中の硝酸イオンの高感度迅速分析法

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タイトル別名
  • Rapid and highly sensitive analytical method for the determination of nitrate in lake water by liquid chromatography
  • エキタイ クロマトグラフィー ニヨル コショウ スイチュウ ノ ショウサン イ

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The liquid chromatography system consists of a series of two columns of H+ -form cation-exchange resin (5 mm i. d.×50 mm length) and ODS resin (3 mm i. d.×50 mm length), and SO2-4 -form anionexchange resin for separation column (3 mm i. d.×150 mm length) and UV spectrophotometer for detection. Nitrate was eluted from anionexchange column by 0.05 M sodium sulfate solution as an eluent, and detected by monitoring the absorbance at 210 nm. It was found that the proposed method was highly sensitive, rapid and reliable by using two pre-columns for the removal of interfering substances. The calibration curves in the concentration ranges of (01000, 0100, 010) ppb nitrate-nitrogen were linear. The detection limit of nitrate-nitrogen was 1 ppb and the time for single determination was within 10 min. The analytical results for nitrate in samples of lake Biwa by the proposed method were agreed well with those by the copper-cadmium reduction method. The correlation coefficient between these data was 0.997.

収録刊行物

  • 分析化学

    分析化学 32 (10), 615-619, 1983

    公益社団法人 日本分析化学会

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