~(222)Rn的吸附性及其对水异常评价的意义

本文依据活性炭、粘土、砂对水中氡进行吸附的试验资料及204地区的野外实际资料,探讨了氡的吸附性。含氡地下水在径流过程中除衰变,逸出会使其氡浓度降低外,岩土对其吸附亦是重要因素。因此,在进行放射性水异常评价时,应充分注意这一点。

ADSORBABILITY OF RADON AND ITS SIGNIFICANCE TO THE EVALUATION OF RADIOACTIVE HYDROCHEMICAL ANOMALIES

Based on the experiments of adsorption of radon by active carbon, clay and sand, and field data from the region No. 204, this paper probes into the adsorbability of radon. Besides decay and escape, the adsorption by rock and soil is also a major factor leading to the decrease of radon concentration in ground water Therefore, more attention should be paid to this characteristics of radon in the evaluation of radioactive hydrochemical anomalies.