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    STUDIA PHYSICA - Issue no. 1 / 2005  
         
  Article:   RADIUM-226 MEASUREMENTS FROM UNDERGROUND WATERS IN DEJ AREA.

Authors:  M. MOLDOVAN, C. COSMA, D. RISTOIU.
 
       
         
  Abstract:  The most important radionuclids from water and gas radioactivity point of view are: the uranium, the radium and the radon with itís short life descendents. This paperwork determinate the radium concentration from underground and surfaces waters in Dej area comparatively with others Romanian regions. We used Luk-3A Czech device. Using this device we can determine the radium concentration indirectly, after we measure the radon resulted from balanced radium-226. The direct forerunner of radon is secular balanced with the radon-222. The 25 samples were taken from Dej area. After the measurements we obtained a 3.7 pCi/ average (the minimum value was 0.61pCi/l and the maximum value 10,47 pCi/l). This radium measurements are important because the sources for the water that we drink are the underground waters, so we can foresee an possible contamination which concerns the population.  
         
     
         
         
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