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Main Title Relationships Between Pb and 210 Pb in Aerosol and Precipitation at a Semiremote Site in Northern Wisconsin.
Author Talbot, R. W. ; Andren, A. W. ;
CORP Author Wisconsin Univ.-Madison. Water Chemistry Program.;Environmental Research Lab.-Duluth, MN.
Year Published 1983
Report Number EPA-R-806878; EPA-600/J-83-170;
Stock Number PB84-170992
Additional Subjects Air pollution ; Lead(Metal) ; Aerosols ; Precipitation(Meteorology) ; Polonium 210 ; Aluminum ; Natural radioactivity ; Wisconsin ; Sites ; Reprints ; Air pollution sampling ; Lead 210 ; Precipitation washout ; Tracer techniques ; Wet deposition ; Dry deposition ; Natural emissions
Library Call Number Additional Info Location Last
NTIS  PB84-170992 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
Measurements of Al, Pb, (210)Pb, and (210)Po in precipitation and aerosol were used to estimate wet and dry components of the atmospheric flux at a semiremote site in northern Wisconsin. Wet deposition was primarily responsible for removing airborne Pb, (210)Pb, and (210)Po, while dry deposition was also important for Al. Although Pb and (210)Pb both exhibited a wet/total ratio of about 0.8, precipitation washout ratios for Pb and (210)Pb suggested that (210)Pb was washed from the atmosphere with greater efficiency than was Pb. This phenomenon was also illustrated by comparing the weighted mean annual specific activity in precipitation (976 pCi (210)Pb/mg Pb) and in aerosol (476 pCi (210)Pb/mg Pb) at this site between June 1979 and June 1980. By consideration of the apparent differential precipitation washout of Pb and (210)Pb, a reasonable estimate of the atmospheric flux of Pb was obtained by using the mean Pb/(210)Pb ratio in aerosol and the (210)Pb flux. (Copyright (c) 1983 by the American Geophysical Union.)