HYDROGEOCHEMICAL CLASSIFICATION OF THE AT MOSPHERIC TECHNOGENIC ACTION BY USE OF REDOX PH STATE OF THE ATMOSPHERIC PRECIPITATES

The pH- and redox state of the atmospheric precipitates in different r egions of the Urals is studied. The comparative analysis of up-to-date data with those of 1970-74 allowed to reveal the substantial changes of the extremal pH values fo these two decades. The intensification of diversity of atmospheric technogenic action resulted in the shift of pH limits both to the left (up to pH = 2.04) and to the right (up to p H = 8.99). The data carried out were summerised in a form of a matrix classification scheme taking into account the redox potential values o f different phase states of the atmospheric precipitates. The border v alues of the acidic-alkaline and redox atmospheric pollution were dete rmined. It is shown that the technosphere of the Urals is developed in the environmentally agressive meteorological conditions.