DETERMINATION OF DISSOLVED RADON AND RADIUM CONTENT OF WATER SAMPLES BY TRACK ETCH METHOD

The authors have developed a method to determine the dissolved radon a nd radium content of water samples using track etch type radon monitor s. The device is an immersed, small volume radon monitor with a CR-39 track etch detector. The monitor is sealed from the water by a thin ra don permeable rubber foil. The dissolved radon and/or the-radium conte nt of water samples can be determined from two independent radon expos ures-by using the solutions of a non-steady state differential equatio n which describes the temporal variation of radon content of water and by using an experimentally determined calibration coefficient. (C) 19 96 Elsevier Science Ltd.