[ RadSafe ] What will 1 ug of Po-210 do?

Olsson Mattias :MSO mso at forsmark.vattenfall.se
Sat Dec 16 13:20:06 CST 2006

Let us make some rough assumptions about Po-210 in the body of a murder victim. Let's say that the dose is uniformly spread and consider only the first day after getting 1 microgram of the substance into the body. Now we can use some numbers to give a very rough estimate of what dose will be delivered:

1 ug = 4.8 nmol = 1.7E8 Bq
Energy per decay = 5.3 MeV = 8.5E-13 J
Dose rate (J/kg/s=Gy/s) = 2E-6 Gy/s
Effective dose after one day = 3.5 Sv

That would give you some sort of idea about what the dose is. 3.5 Sv would indeed make you feel somewhat sick... And that is only after one day.

PhD Mattias Olsson, FTKS
Forsmarks Kraftgrupp AB
SE-742 03 Östhammar

t. +46(0)173-81952
m. +46(0)705-801952
e. mso at forsmark.vattenfall.se 

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