Abstract
The annual wet and dry deposition fluxes of 12 trace elements (i.e., As, Cd, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Sb, Se and V) were measured on the basis of one year of observations (December 2003 to November 2004) at 10 sites in Japan. Precipitation and dry deposition (gases and particles) samples were collected every half-month using an automatic sampler, which is composed of a precipitation sampler and a water surface sampler for dry deposition. In this paper, the annual wet and dry deposition fluxes of the above trace elements in Japan are presented for the first time, and factors contributing to their regional variations are discussed. In addition, sources of the deposited lead are evaluated on the basis of lead isotope ratios in the precipitation and dry deposition samples.
