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Russian Journal of Physical Chemistry B

, Volume 3, Issue 2, pp 185–190 | Cite as

Kinetics of the oxidation of model toxicants during photolysis of nitrites and nitrates in an aqueous medium

  • N. I. Zaitseva
  • I. S. Baikova
  • V. O. Shvydkii
  • R. R. Borodulin
  • E. V. Shtamm
  • Yu. I. Skurlatov
Effect of External Factors on Physicochemical Transformations
  • 44 Downloads

Abstract

Quantitative toxicology methods with the use of the enzymic activity of luminescent bacteria and the reproductive function of Tetrahymena pyriformis infusoria as test functions were employed to study the kinetics of the detoxication of model toxicants during photolysis of nitrite and nitrate. The model objects were the para-nitrosodimethylaniline (p-NDA) dye and a 2000-fold diluted solution of black liquor, which is formed during the sulfate boiling of cellulose. It was established that, irrespective of the wavelength of photolyzing UV radiation, be it 220 or 365 nm, the reactive product of NO 2 and NO 3 photolysis is the hydroxyl radical, which causes a symbatic decrease in the concentration of the toxicant and its toxicity. It was demonstrated that nitrite and nitrate ions can be used as initiators of free radicals during the destructive UV-light-induced purification of wastewater.

Keywords

Nitrite Photolysis Paper Mill Black Liquor Luminescent Bacterium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • N. I. Zaitseva
    • 1
  • I. S. Baikova
    • 2
  • V. O. Shvydkii
    • 2
  • R. R. Borodulin
    • 2
  • E. V. Shtamm
    • 2
  • Yu. I. Skurlatov
    • 1
  1. 1.Semenov Institute of Chemical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Emanuel Institute of Biochemical PhysicsRussian Academy of SciencesMoscowRussia

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