| Popis: |
Radon contents of groundwater sources have led to a great interest in hydrological, hydrogeological and geological engineering. The most interesting applications are: The determination of the fluctuations of the piezometric levels in groundwater to evaluate hydrogeological resources, the study of recent hydrothermal manifestations, the study of oil- and gas-bearing regions, the estimation of uranium deposits and the study of the relationship between the radon concentration and the degree of stress of the earth's crust at different stages of seismic activity. Waters from springs and deep wells in the plateau of Tassili (southeast Algeria) were sampled, measured and radon quantified. Radon measurements were performed using two different methods. The first method, active, based on the use of a Lucas-type scintillation chamber in conjunction with a portable monitor (model Pylon AB-5); the second method, passive, using an electret ion chamber with a 4 l glass analysis bottle. The aim of this work is to develop a method for sampling, detecting, evaluating and measuring the 222 Rn in groundwater using the scintillation cell method. A comparison of the two methods was carried out and both were found to be useful under environmental conditions in Algeria. |
Full Text from ScienceDirect