ANNUAL ATMOSPHERIC DEPOSITION OF 16 ELEMENTS IN 8 CATCHMENTS OF THE CENTRAL BARENTS REGION

Snowpack and rainwater samples were used to calculate total yearly dep osition rates for Al, As, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mo, Ni, Pb, S, S b, Sr and V in eight catchments located within the Barents region, in Finland, Norway and Russia. Water-soluble (<0.45 mu m) deposition and particulate (> 0.45 mu m) deposition were determined separately on sno wpack samples representative of winter 1993/1994. Filtered rainwater s ampled during the summer months of 1994 was used to obtain monthly wat er-soluble deposition data. The snow data were used to calculate the c haracteristic parameters of dispersion of the pollutants, which are co nstant for any given industrial source. To obtain these parameters, th e element ratio of water-soluble to particulate deposition was express ed as a function of distance from pollution source. This function can then be used to calculate total (water-soluble + particulate) summer d eposition data from the water-soluble deposition data collected. Yearl y deposition estimates tin kg/km(2)) obtained for the area range from 0.05 to 0.4 for Cd, 0.02-60 for Co, 0.14-5.2 for Cr, 0.5-494 for Cu, 0 .2-845 for Ni and 125-1500 for S, depending on location (remote vs, in dustrial). (C) 1998 Elsevier Science B.V. Al rights reserved.