Deposition Rates of Atmospheric Particulates Determined from Pb-210 Measurements in Soils and Air

Deposition rates of atmospheric particles were determined using previously published Pb-210 data in soils and air. The dry deposition velocities for moorland and woodland soils were 2.2 +/- 1.8 and 9 +/- 2 mm.s(-1), respectively. The Pb-210 concentration in rain was calculated to be 94 +/- 10 mBq.L-1. The large (similar to 4 times) deposition velocities in woodland relative to moorland soils is an indication of the degree of accumulation of particles, and most possibly contaminants within woodland soils, which is of practical importance in the mitigation of pollutant concentrations in urban areas by planting trees.