[ RadSafe ] Banana Equivalent Dose - erroneous?

[Jerry Cohen]

Ed, 
It's worse than that. With no potassium in the diet, we would die of electrolyte 
imbalance. A serious problem that Luckey faced in his hormesis studies, when he 
tried to raise animals in a radiation free environment,  was to find food for 
them that was free of K-40. The animals could not survive on a Potassium-free 
diet. As I recall, he found a source of pure K-39 at ORNL, but the cost was 
prohibitive. For this and other reasons, he had to abandon the idea.
Jerry Cohen



________________________________
From: "edmond0033 at comcast.net" <edmond0033 at comcast.net>
To: The International Radiation Protection (Health Physics) Mailing List 
<radsafe at health.phys.iit.edu>
Sent: Fri, March 25, 2011 2:16:31 PM
Subject: Re: [ RadSafe ] Banana Equivalent Dose - erroneous?

I fail to understand the problems with K-40 in Banana's.  Potassium (and K-40) 
is present in most foods.  In fact here most foods contain it.  Coffee beans 
and  instant coffee contain it.  Just remember that we'd all be gone if our 
bodies contain it.  Until someone finds a way to eliminate it (K-40) from foods, 
we will be stuck with it for eons.

Ed Baratta

-----Original Message----- From: McNaughton, Michael
Sent: Friday, March 25, 2011 2:51 PM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Banana Equivalent Dose - erroneous?

Shima

To the best of my knowledge, FGR #11 is not applicable in this case. However, I 
don't know of any documentation.

Mike McNaughton
LANL
mcnaught at lanl.gov

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu 
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of shima
Sent: Friday, March 25, 2011 11:08 AM
To: radsafe at health.phys.iit.edu
Subject: Re: [ RadSafe ] Banana Equivalent Dose - erroneous?

The main question I am seeking to clarify is:

does this mean that applying the dose given in FGR #11 for K-40 is
incorrect in this case?

Is using the dose from exposure to K-40 given in FGR #11 valid in the
case of ingestion of a large mass (circa 500mg) of a natural mix of
potassium isotopes.

In particular any ref to any documentation explaining whether or not
this is correct use of the dose tables would be most helpful

best regards.


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