[ RadSafe ] Po-210 Lethal dose

Ellars, Charles Charles.Ellars at qsa-global.com
Mon Nov 27 13:44:14 CST 2006

I read in some account the amount of 5 Gy for this ex-spy which is
probably not based on anything and is a wild guess.  But for arguments
sake...  Since Table 1 of Appendix B 10 CFR 20 shows the oral ingestion
ALI (daily) as 3 uCi for Po-210, that suggests he would need to have
swallowed approximately 3 mCi of Po-210 to get that dose.  My question:
Is that a legitimate way to ball park the ingestion amount? Or is there
a more appropriate way to do it.  Thanks.

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