[ RadSafe ] Plutonium with High Concentrations Hazards Summary(Draft Number One).

[Fritz A. Seiler]

Otto,

Help, scientific notation please!  I cannot count that many zeroes
reliably!  Or tell ua hwere you got the number from!
Best regards

Fritz

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Fritz A. Seiler, Ph.D.
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-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On
Behalf Of John R Johnson
Sent: Friday, September 09, 2005 4:49 PM
To: Otto G. Raabe; Emil; radsafe at radlab.nl
Subject: RE: [ RadSafe ] Plutonium with High Concentrations Hazards
Summary(Draft Number One).


Otto

Thanks, that is what I thought.

John
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John R Johnson, Ph.D.
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or most mornings
Consultant in Radiation Protection
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Fax: (604) 222-7309
johnsjr at triumf.ca

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
Behalf Of Otto G. Raabe
Sent: September 9, 2005 1:10 PM
To: Emil; radsafe at radlab.nl
Subject: Re: [ RadSafe ] Plutonium with High Concentrations Hazards
Summary (Draft Number One).


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

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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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