[ RadSafe ] Concerning Rizzini's claim of one ug U-238

[Brennan, Mike (DOH)]

Lifetime risk of death equals one.

I am highly suspicious of any claims of finding "depleted uranium", as distinguishing between background natural uranium and background natural uranium plus depleted uranium is beyond the capabilities of most really good labs, let alone what most activists use.  (The exception is when you find intact DU projectiles, of course.  On the other hand, if one is ingesting or inhaling projectiles, or even identifiable pieces of them, perhaps there are more pressing problems to worry about.


-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of John R Johnson
Sent: Monday, October 28, 2013 10:33 AM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Concerning Rizzini's claim of one ug U-238

Cary et al

Unfortunately, we will all die sometime from many different cause.

John


On Mon, Oct 28, 2013 at 8:19 AM, Cary Renquist <cary.renquist at ezag.com>wrote:

> Doesn't that mean that he is correct?  100% of people with more than 1 
> ug
> U238 will die.
>
> ---
> Cary Renquist
>
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu [mailto:
> radsafe-bounces at health.phys.iit.edu] On Behalf Of Cowie, Michael I
> Sent: Sunday, 27 October 2013 11:30 PM
> To: The International Radiation Protection (Health Physics) Mailing 
> List; Mattias.Lantz at physics.uu.se; The International Radiation 
> Protection(Health Physics) Mailing List
> Subject: Re: [ RadSafe ] Concerning Rizzini's claim of one ug U-238
>
> From the IAEA document Depleted uranium: sources, exposure and health 
> effects, Executive Summary it states:
>
> On average, approximately 90 μg (micrograms) of uranium exist in the 
> human body from normal intakes of water, food and air; approximately 
> 66% is found in the skeleton, 16% in the liver, 8% in the kidneys and 
> 10% in other tissues.
>
> So with 99.27% of that being U-238................
>
>
> Mike
>
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu [mailto:
> radsafe-bounces at health.phys.iit.edu] On Behalf Of Otto G. Raabe
> Sent: Monday, October 28, 2013 10:14 AM
> To: Mattias.Lantz at physics.uu.se; The International Radiation 
> Protection (Health Physics) Mailing List
> Subject: Re: [ RadSafe ] Concerning Rizzini's claim of one ug U-238
>
> Rizzini has been quoted as saying that one microgram of U-238 can kill 
> a person. An article from March 31, 2011, Rizzini once again claims 
> that 1 microgram of uranium is enough to kill a person:
>
> PLEASE CHECK MY MATH: According to ICRP-2 (page 81) a human can have a 
> body burden of U-238 of 0.5 microcuries without lifetime risk.
> That is 0.5 microcuries times 3.7 x 109 Bq/uCi = 1.9 x 109 Bq. One 
> microgram of U-238 equals 0.012 Bq.
>
> Hence, according to ICRP-2 a human could have an internal burden of 
> about ten grams without significant radiation risk.
>
> Am I missing something here? Please check my math.
>
> Otto
>
> **********************************************
> Prof. Otto G. Raabe, Ph.D., CHP
> Center for Health & the Environment
> University of California
> One Shields Avenue
> Davis, CA 95616
> E-Mail: ograabe at ucdavis.edu
> Phone: (530) 752-7754   FAX: (530) 758-6140
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