[ RadSafe ] "Sensitive among the Sensibles ", Plutonium with High Concentrations Hazards Summary (Draft Number One).

[Emil]

Otto,

Thank you, for your response, 

I would like to warn some radsafers before somebody else will do.

This subject is sensitive in nature so,
let's guys try to be careful as much as we can and not crossing the
certain line. So we will be RESPONSIBLE professionals, okay?

Let, me make some clarifications about the Pu chemical compounds.
You are absolutely CORRECT about the inert form or the Pu as metal
form. I will not go into the meta states of the metal here on the
list due to the certain reasons.

Again you are absolutely correct, metallic form is pretty much
harmless chemically, until it gets into the heavy weights 
category :-) 
But it is another subject.

Back on track,

Generally speaking, Pu of high grade, Class W i.e. dissolved in an
acid is completely different story as you have mentioned the
chelatable form, why there are chelation agents used to safe persons
life in certain cases.

In an acid solution it will FLY straight into the blood stream and
will get into what ever organ it wants to go, FAST and NO FAST TRACK
lane needed for that type of carpool......

I would not call that as an imaginary scenario but an everyday's
traffic analogy.

Again, sincerely, appreciate your valuable feedback and for keeping
me straight here:-)

Please, do not take offense in my ranting style, English is not my
first, nor the second and not even the third language. Neither I am
looking for the excuses, here.

So by being a little jumpy on the emotions, helps me to concentrate
while expressing what I think and sometimes I may remember about the
subject :-)

Emil.



--- "Otto G. Raabe" <ograabe at ucdavis.edu> wrote:

> September 9, 2005
> 
> The solubility product constant for Pu(IV) is about 
> 0.00000000000000000000000000000000000000000000000001, which means
> that at 
> physiological pH there are effectively zero ions of plutonium in
> the body. 
> This means that Pu in the body is quite inert!
> 
> Also, it quite difficult to get Pu into the systemic circulation
> since only 
> about 0.00001 of an ingested amount enters the blood and it only
> very 
> slowly can pass from the lung to the blood if inhaled (half time
> measured 
> in years), unless it is inhaled in a chelatable chemical form.
> 
> There is therefore no expected chemical toxicity associated with
> plutonium, 
> except for the imaginary chemical toxicity.
> 
> Otto
> 
> **********************************************
> Prof. Otto G. Raabe, Ph.D., CHP
> Center for Health & the Environment
> (Street Address: Bldg. 3792, Old Davis Road)
> University of California, Davis, CA 95616
> E-Mail: ograabe at ucdavis.edu
> Phone: (530) 752-7754   FAX: (530) 758-6140
> ***********************************************  
> 
> 





	
		
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