[ RadSafe ] Sr-90 in milk (re-named)

Sat Jun 4 12:27:58 CDT 2011

Chris, 

As I was suspicious previously  you seem to deliberately use all the tricks available to make reading of your comments and answering them tedious or almost impossible. I understand that you as a really outstanding and "eminent" scientist (like the nun is described in the funny pamphlets you obviously are involved in,) needs not care for commonly accepted codes of conduct. 

Furthermore you are a really funny person! I wrote (and you repeat it), that Sr-89 is a fission product. But this seems not enough for you: It seems necessary for you to write  y o u r s e l f  that it is a product from nuclear explosions!!!! What is the difference, are  fission products from explosions so much different from fission products of nuclear power plants? This sheds some light on your character. You always have to be in the middle of the discussion, even if you are only repeating what others already have written. You have nothing relevant to contribute - at least I have not yet found anything. You are always biting at others findings, but do not provide any  better explanations or solutions. 

My next comments will be on the fake European Radiation Commissions Something. Stay tuned!

Franz

---- "Busby schrieb:
> . 
> 
> 
> -----Original Message-----
> From: radsafe-bounces at agni.phys.iit.edu on behalf of franz.schoenhofer at chello.at
> Sent: Fri 6/3/2011 9:02 PM
> To: The International Radiation Protection (Health Physics) MailingList
> Cc: Glenn R. Marshall
> Subject: Re: [ RadSafe ] Sr-90 in milk (re-named)
>  
> Sorry Glenn, you are wrong. 
> 
> Sr-89 is a fission product, it is also a pure beta emitter like Sr-90. So it causes problems when determining Sr-90 in fresh fission products and especially in the first days after the Chernobyl accident it caused problems, because many person doing measurements did not know it or simply neglected it, producing much to high valures for Sr-90. Measurement is not easy, in most traditional methods radiochemical separation is necessary (it is anyway, but not to this extent like in the presence of Sr-89). Also short lived yttrium isotopes pose a problem and I know of several cases where wrong results for Sr-90 were caused because of the wrong assumption that this other Y-isotope was Y-90 in equilibrium with Sr-90. 
> 
> All these caveats might  also be applicable to the messages about Sr-90 and Sr-89 from Japan. One would have to know the details of the methods used. 
> 
> Sr-89 is used for what you described, but it is produced by some accelerator reaction - you would not be able to separate Sr-89 from Sr-90 produced by nuclear fission - or would you?
> 
> Best regards,
> 
> Franz
> 
> ---- "Glenn R. Marshall" <GRMarshall at philotechnics.com> schrieb:
> > Sr-89 is predominantly a medical radionuclide, whereas Sr-90 predominantly exists as a fission product.  I believe its primary use is treatment of bone cancer.  
> > 
> > With increased testing for every radionuclide on the chart, it's not surprising traces of oddball species pop up.  
> > 
> > Glenn
> > (865) 257-2760
> > 
> > -----Original Message-----
> > From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Edmond Baratta
> > Sent: Friday, June 03, 2011 1:28 PM
> > To: The International Radiation Protection (Health Physics) MailingList; The International Radiation Protection (Health Physics) Mailing List
> > Subject: Re: [ RadSafe ] Sr-90 in milk (re-named)
> > 
> > How can you have Sr-89, without Sr-90??
> > 
> > Ed Baratta
> > edmond0033 at comcast.net
> > 
> > -----Original Message-----
> > From: Steven Dapra
> > Sent: Wednesday, June 01, 2011 8:07 PM
> > To: The International Radiation Protection (Health Physics) Mailing List
> > Subject: [ RadSafe ] Sr-90 in milk (re-named)
> > 
> > June 1
> > 
> >          A trace.  Well, my goodness, it sounds like time to panic.  (You go first, Chris, and show us how it's done.)
> > 
> > Steven Dapra
> > 
> > 
> > At 09:41 AM 6/1/2011, you wrote:
> > >May 31
> > >
> > >          Has any Sr-90 been measured in milk in Hawaii?
> > >
> > >Steven Dapra
> > >
> > >No Sr-90, but a trace of Sr-89
> > >
> > >http://www.epa.gov/japan2011/docs/rert/RadNet-Sr-Milk-Public-Release-5-
> > >24-2011.pdf
> > >
> > >That was from early April.  Someday we may get more data.
> > >
> > >Tony Harrison, MSPH
> > >Colorado Department of Public Health and Environment Laboratory 
> > >Services Division
> > >303-692-3046
> > 
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> --
> Franz Schoenhofer, PhD, MinRat
> Habicherg. 31/7
> A-1160 Vienna
> Austria
> mobile: ++43 699 1706 1227
> 
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> 
> Sr89 is produced in nuclear explosions
> 
> C
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--
Franz Schoenhofer, PhD, MinRat
Habicherg. 31/7
A-1160 Vienna
Austria
mobile: ++43 699 1706 1227