[ RadSafe ] Iodine Chemistry & Geochemistry

[Doug Huffman]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- From the Wikipedia, I note that iodized table salt has ~10 ppm KI.

"Salt that is iodised with iodide may slowly lose its iodine content by
exposure to excess air over long periods. The halogen iodide, over time
and exposure to excess oxygen and carbon dioxide, slowly oxidizes to
metal carbonate and elemental iodine, which then evaporates."

Katarzyna Waszkowiak & Krystyna Szymandera-Buszka. Effect of storage
conditions on potassium iodide stability in iodised table salt and
collagen preparations. International Journal of Food Science &
Technology. Volume 43 Issue 5, Pages 895 -899. (Published Online: 27 Nov
2007)



On 3/23/2011 15:18, Dan W McCarn wrote:
> Dear Group:
> 
> I have been going through the geochemistry of iodine for the last couple of
> hours, but cannot find a couple of items.  When I cook with iodized salt, I
> notice that I can easily smell the iodine released in the boiling water.  
> 
> Likewise, iodine preferentially partitions from seawater over Cl and I can
> smell the iodine from seawater for miles.  Groppel and Anke (1986) note that
> the iodine concentration of crops and grasses was influenced by distance
> from the sea.  
> 
>>From the British Geological Survey - CR/03/057N, P. 21:
>  - Iodide is taken up by seaweed and phytoplankton and released as
> iodine-containing organic gases such as CH3I and CH2I2.
>  - Organic gases cross the sea-atmosphere boundary and iodine is released
> into the atmosphere by the action of sunlight.
> 
> My first question on is: Can boiling water effectively reduce radioiodine
> from water?
> 
> Would introduction of iodine as prophylaxis in contaminated water supplies
> help reduce uptake of radioiodine in drinking water?
> 
> 
> Dan ii
> 
> --
> Dan W McCarn, Geologist
> 108 Sherwood Blvd
> Los Alamos, NM 87544-3425
> +1-505-672-2014 (Home - New Mexico)
> +1-505-670-8123 (Mobile - New Mexico)
> HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com
> 
> 
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
> 
> Before posting a message to RadSafe be sure to have read and understood the RadSafe rules. These can be found at: http://health.phys.iit.edu/radsaferules.html
> 
> For information on how to subscribe or unsubscribe and other settings visit: http://health.phys.iit.edu
> 

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iQEcBAEBAgAGBQJNilm6AAoJEIpOLnult3mgl0AIALJ+H2u+ES3/JwUj+rr8AktB
JbReZjKwBsVASSE7upFboQIZFqlXMJ8KNgHeyGOtrZFmszbohxr7ryhY1pjs8nHK
Rwyh8tGwZWJ5wQmEXwV+0hCTS21iV7/8Q+M8MbOZumk8Ypq1M2gLGjrlRakR+NFb
UVwWgE4kYHKyRSd5bj2ckYWcOMgOtr6cCkbhFPplZfM0c729zVPPsZ8uWsguEjoK
BRM7JtJuwjAIxtbFSe5CftSBnt6yGeRzSrhXB8r4FXLO62tJ/+rZndezYYHQYzwx
jgGzf3jHpD3bjcagwlVur/KeB9gNNgvhhgTZ7/8MN3gYXrOgSErkXQCkt3+UHJM=
=+UWA
-----END PGP SIGNATURE-----