RE: Animal radon studies

["Gibbons, Gregory J" <GJGibbon@MAIL.BHI-ERC.COM>]

Okay---sorry---I mistakenly forgot to factor in the increased alpha dose

from the progeny as well as the beta contribution; in the scenario without

mucosal build-up, you would still have progeny plate-out on the lung

surfaces (though I would have thought to a much lesser extent than in the

case with increased mucus production due to the cigarette smoke).  If the

plate-out difference between the two scenarios isn't very big (i.e. small

enough to negate the increased beta dose), then the total dose would indeed

drop due to shielding of the alphas by the mucus lining.



Thanks for the clarification.



Greg Gibbons





-----Original Message-----

From: Matthew&Elizabeth Rumick [mailto:merumick@hotmail.com]

Sent: Friday, September 06, 2002 8:06 AM

To: bill-field@uiowa.edu; GJGibbon@mail.bhi-erc.com

Cc: garyi@BCM.TMC.EDU

Subject: RE: Animal radon studies





Sorry, the dose IS received from the progeny, or decay products, that stick 

in the lungs.  The mucus layer is thought to shield the lung tissues from 

the alpha particles ... not from the Radon, but from the decay products.





>From: "Field, R. William" <bill-field@uiowa.edu>

>To: "Gibbons, Gregory J" <GJGibbon@mail.bhi-erc.com>, "'Matthew&Elizabeth 

>Rumick'" <merumick@HOTMAIL.COM>

>CC: "'garyi@BCM.TMC.EDU'" <garyi@BCM.TMC.EDU>

>Subject: RE: Animal radon studies

>Date: Fri, 06 Sep 2002 10:01:30 -0500

>

>

>Greg, The dose received is from the decay products, see:

>

>http://www.vh.org/Providers/Textbooks/Radon/HealthRisk.html

>

>

>A good overview of the animal studies can be found here -

>http://books.nap.edu/books/0309037972/html/430.html#pagetop

>

>Bill

>

>

>. William Field, M.S., Ph.D.

>College of Public Health

>Department of Epidemiology

>Department of Occupational and Environmental Health

>N222 Oakdale Hall

>University of Iowa

>Iowa City, Iowa  52242

>

>319-335-4413 (phone)

>319-335-4748 (fax)

>mailto:bill-field@uiowa.edu

>Community of Science CV : http://myprofile.cos.com/Fieldrw









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