U in corals

[p.bossew@magnet.at (Peter Bossew)]

In samples (coral sand, Acropora sp. coral) from the S Pacific, the

Maldives and Okinava I found a Th234/Ra226 ratio MED = 35, MAD = 21 (n=9)

(by gamma spectrometry). Typical Th234 activity conc. in coral seems to be

25-35 Bq/kg. - I cannot imagine that corals can be a radiological problem

under any 'normal' conditions. 



A lot of data about Ra (and some about U) in the environment can be found

in:

The Environmental Behaviour of Radium. IAEA Technical Report Series 310

(1990) (2 vols).



regards

p



--------------------------------------------------------------------------------------

Peter Bossew

Institute of Physics and Biophysics, University of Salzburg, Austria



home: Georg Sigl-Gasse 13/11, A-1090 Vienna, Austria

ph. +43-1-3177627, e-mail: peter.bossew@univie.ac.at



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