Lead-210 in Air and Total Diets in the United States During 1966

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Abstract
Data are presented on the concentrations of lead-210 in air and diet samples collected from various geographical locations in the United States during 1966. The average lead-210 concentration in air particulates for 1966 differed significantly between locations and ranged from 4.8 to 26.1 fCi/m3. The concentration in total diet was not significantly different between locations and averaged 0.80 pCi/kg. From these data it was estimated that an average of 0.15–0.21 pCi/day of lead-210 reaches the blood stream of inhabitants of the United States from these sources of exposure and that about 70–90% of this amount comes from ingestion.

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