Table 9
Natural Levels of Pb-210
Estimated Mean
Soil - Upper layer
Range
Area
60 mCi/km
Reference
3
Fresh Water
Precipitation
0.5 - 3 pei/l
3
Lakes sand Rivers
0.05 - 2 pei/i
2
G.94 pci/1
5
Ocean Water
OS poi/1
4
Human Piet
1.2 pli/d
5 pci/d
Drinking
0.01 pCi/m?
Air
New York City
Germany
0,002 - 0.010
USA
3
19
z
3
Body Content
Skeleton
272 pci
Internal Dose - Osteocytes
0.7 mrad/y
Deposition
2 mCi/kme/y
100 - 400 pCi
3
2