Chemical Reactivity of. Chloramine and Dichloraminet

DOI Web Site
  • AOKI Toyoaki
    Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture
  • OKUBO Junta
    Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture
  • SASAKI Shigeaki
    Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture
  • MUNEMORI Makoto
    Laboratory of Environmental Chemistry, College of Engineering, University of Osaka Prefecture

Bibliographic Information

Other Title
  • クロラミンおよびジクロラミンの化学反応性
  • Reactivity of alternative disinfectants in drinking water. I. Chemical reactivity of chloramine and dichloramine.

Description

Aqueous solutions of chloramine and dichloramine were prepared at pH 10.0 and pH 5.0, respectively, where chloramine and dichloramine were stable for at least 3h. The rate constants for the reactions between the chloramines and a series of compounds were determined at 25°C by the microporous membrane-separation technique. The chloramines separated from the reaction mixture were monitored at 244 nm for chloramine and at 297nm for dichloramine. The reaction were of second order, being of first order in each reactant. The observed second order rate constants for chloramine at pH 6.89 and dichloramine at pH 5.0 ranged from 0.16 (nitrite) to 52.9 (hydroxylamine) M-1⋅s-1 and from 0.017 (hydroxylamine) to O.62 (ascorbic acid) M-1⋅s-1, respectively.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1989 (2), 288-291, 1989-02-10

    The Chemical Society of Japan

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