ALIs

[jgbarnes@ix.netcom.com (JAMES BARNES)]

Hello Again,

Thanks to all for the ALI information.

As I understand the consensus:

1)  If I'm going to use ALI to back calculate a whole body dose, I WILL 
need to correct for the 30-odd % of the material that was immediately 
exhaled.  This is based on the fact that the "intake" starts at the 
"lips and nose."

2)  If I calculate a "time 0" body burden, and then determine a whole 
body dose (using ICRP, MIRD, whatever), then this value would NOT be 
corrected for immediate exhalation (as it doesn't bear on the dose 
problem).  Here "uptake" has to occur for a significant dose to be 
delivered.

3)  It is likely that the two systems of measurement will disagree, due 
to assumptions inherent in each scheme.

Again, thanks for the help.


Jim Barnes, CHP
RSO
Rocketdyne Division, Rockwell International