Abstract
Atmospheric lead concentrations were measured as a function of both time and position in a rural area adjacent to Urbana-Champaign, Illinois during the period August 1973 to February 1974. The results were related to traffic and meteorological data with the use of a mathematical model for the transport of lead particulates from local sources. The mean rural concentration is 0.227 μg m −3 with a S.D. of 0.116 μg m −3. Most of the lead in the rural area is transported into the area from distant sources with the contribution of automobiles in Urbana-Champaign and local highways being minor. Measurements were also made of particle size distributions and deposition rates to the ground.
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