On Wednesday, April 26, 1995 at 8:00:00 AM UTC+1, Gerry Niccolai wrote:   
   > Can anyone confirm that heavy water (D2O) occurs in sea water   
   > in the expected (by me, anyway) natural abundance of one   
   > molecule of D2O per about 36 million water molecules?   
   >   
   > Please, respond only if you cite EXPERIMENTAL evidence (IR?   
   > Mass spec?).   
   >   
   > Thank you in advance,   
   >   
   > gerry   
   >   
   > PS - The final objective being an estimation of the amount of   
   > D2O present on earth from natural sources as opposed to   
   > synthetic sources, so an estimation of the amount of water on   
   > earth would be helful as well.  Where does commercial D2O come from,   
   > anyway?   
   yeh   
      
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