A model to predict the steady-state concentration of hydroxyl radicals in the surface layer of natural waters.
A model was developed to predict the steady-state [*OH] in the surface layer of natural waters as a function of nitrate, inorganic carbon (IC) and dissolved organic matter (DOM). The parameter values were studied in the range detected in shallow high-mountain lakes, to which the model results are most relevant. Calculations indicate that [*OH] increases with increasing nitrate and decreasing IC, and conditions are also identified where [*OH] is directly proportional, inversely proportional or independent of DOM. Based on the model results it is possible to predict the half-life time, due to reaction with *OH, of given dissolved compounds, including organic pollutants, from the water composition data.
Minero
Claudio
C
Dipartimento di Chimica Analitica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy.
Lauri
Vittorio
V
Maurino
Valter
V
Pelizzetti
Ezio
E
Vione
Davide
D
D005618:Fresh Water / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000032:analysis*; D008962:Models, Theoretical; D013472:Sunlight; D014874:Water Pollutants, Chemical / Q000032:analysis
D014874:Water Pollutants, Chemical; D017665:Hydroxyl Radical