Uncertainties in retrospective radon exposure of glass: possible effects of hydration and of leaching.
Embedded 210Pb in glass results from exposure to 222Rn and its prompt decay products and is used to estimate integrated, retrospective radon exposures for times up to the 32-y mean life of 210Pb. Certain established uncontrollable factors lead to rather large scatter in the results. We review briefly the known sources that contribute to this scatter and then point out that effects of water and, in particular, hydration layers on glass are probably further sources of error, possibly of major importance, but subject to straightforward checking to reject glass compositions that are unreliable.
Fleischer
R L
RL
Department of Geology, Union College, Schenectady, NY 12308, USA. fleischr@union.edu
Doremus
R H
RH
D004058:Diffusion; D004781:Environmental Exposure; D005898:Glass / Q000737:chemistry*; D006859:Hydrogen; D007700:Kinetics; D007856:Lead Radioisotopes / Q000032:analysis*; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis; D012542:Scattering, Radiation; D012964:Sodium; D014867:Water
D007856:Lead Radioisotopes; D017687:Radon Daughters; D014867:Water; D006859:Hydrogen; D012964:Sodium; D011886:Radon