2,7-フルオレンジアミンを用いる水道水中の残留塩素の定量

書誌事項

タイトル別名
  • Determination of residual chlorine in tap water with 2,7-fluorenediamine.
  • 2,7‐フルオレンジアミンを用いる水道水中の残留塩素の定量
  • 2 7 フルオレンジアミン オ モチイル スイドウ スイチュウ ノ ザンリュウ

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説明

Tap water always contains more than 0.1ppm chlorine for disinfection. The residual chlorine was determined with 2, 7-fluorenediamine(FDA) spectro-photometrically. Ten ml of the sample water, which contained less than 1.5ppm chlorine, was transferred to a 15ml test tube with a ground stopper. One ml of 2M nitric acid and 1ml of 40mg/l FDA solution were added and shaken. After 3min the absorbance was measured at 422nm. The calibration curve showed a straight line which passed through the origin and the molar extinction coefficient was 5.1×104l mol-1 cm-1. Coexisting cations and anions in tap water did not interfere with the determination.

収録刊行物

  • 分析化学

    分析化学 35 (9), 835-837, 1986

    公益社団法人 日本分析化学会

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