Measurement of Radon exhalation rate using Solid State Nuclear Track Detector

摘要

Fly ash, which is the combustion of coal, is an important by product of coal, which produces by burning of coal in power plants. It contains a significant amount of radionuclide abundance viz. Uranium, thorium and potassium. It is very important to study consider significant health hazard imposed in human beings due to large number of amount of fly ash used in making bricks and cemented road now a days. In thepresent study radon exhalation rate measurement has been done using CAN technique (based on solid state nuclear track detector). A total no. of 16 fly ash samples collected from dumping areas of Kasimpur Thermal Power Plant ,Harduaganj, Aligarh has been analysis using passive detector. For the measurement of the radon exhalation rate, the 'CAN technique' using alpha sensitive LR-115 type II plastic track detectors were used. Measured value of radon mass exhalation varies from 0.31mBq/kg/h to 2.31mBq/kg/h with an average 1.18mBq/kg/h. The radon surface exhalation rate varies from 7.78mBq/m~2/h to 57.7mBq/m~2/h with an average 29.5mBq/m~2/h. A significant amount of radon exhalation from flyash samples seems to emphasize the needed for adequate facilities require around dumping areas and minimize the effect on health effects by reducing of the amount of radon and its progenies.