HEAVY-METALS ON THE KOLA-PENINSULA - AEROSOL-SIZE DISTRIBUTION

The size distribution of aerosols containing metal was investigated in the Monchegorsk region. It was found that lead and arsenic occur pred ominantly in fine particles (< 1 mu m) and that copper and nickel occu r both in fine(< 1 mu m) and coarse particles. The mean ratios of tota l mass (all size ranges) Cu/Pb and Cu/As in the air were found to be 1 0 and 16, respectively. Comparing these ratios with the snowpack data of Jaffe et al. (1994) in the Monchegorsk region, we find an enhanceme nt of Cu in the snowpack, relative to Pb and As. This is consistent wi th our observed size distributions and indicates that the Monchegorsk Pb and As emissions are transported longer distances than Cu and Ni pr ior to removal. Results show the importance of considering the size di stribution of metal emissions in chemical transport and/or factor anal ysis type models.