| TaREMge “Uh OR eames: an { meESR CUREHe oo a TE e . . / - ve -2- | - ; depth, it may be possible to determine the “normal” BaD content of the soil resulting from the radium to radium-D conversion within the soil. | deficiency of RaD in the top mostportion of the soil would be representative of the ratio of esission of redon to deposition of ReD. : . wd ! ‘ ‘The excess or In certain areas (deserts) there ‘should be w deficiency of RaD in the top aotl; in other, there should be an excess. ‘Erronecus results would be obtained in areas with mich rainfall due to run off and/or leaching. Tob determine the ebsolute rate offatesion of radon, it might be necessary to construct # dead air space above the soil and determine the equilfbrita value of radon inthis space. Po the importance of such & deteraination of ¢ radon in sir to RaD in soil is that the © sort of relation should be developing between er”?in air and in soil. ‘The radou/RaD ratio should be an equilibrium value and should give a "coupling" factor with er? air concentrations to give the ultimate ere? soil concentrations {ven location and perhaps transferred to other locations if corrections for the | i different meteorlogical conditions could be applied. ‘he average air concentration ao of sr? could then be used to estimate the deposition rates at any location where such air concentrations vere available. ‘This would be of even more velue when air concentrations becowe more uniform throughout the world. sexple would be required in only a few representative cress. ar?? ‘Then continuous air