Measurement of radon concentration in ground water using RAD7 and assessment of average annual dose in the environs of NITJ, Punjab, India

508-511The present study represents the set of measurements for radon concentration levels in ground water using electronic radon meter (RAD7) and for assessment of indoor radon the LR-115 Type II plastic track detectors have been used. The measurements have been taken for the environs and ground water of National Institute of Technology, Jalandhar. The radon concentration in drinking water has been found to vary from 2560 to 7750 Bqm-3 with an average value of 5143.33 Bqm-3. The pH value for the ground water under study has also been measured and it varies from 6.96 to 7.0 with an average value of 6.99. No correlation has been observed between pH value and radon concentration values for ground water. The calculated indoor radon concentration values vary from 74 to 190 Bqm-3 with an average values of 124.50 Bqm-3. The calculated values for the absorbed dose are in the range 1.26 - 3.24 mSv.y-1, which is well below the action level.</b

Analysis and assessment of radiological risk in soil samples of Hisar district of Haryana, India

512-515The activity concentrations and the gamma absorbed dose rates of radio nuclides in soil samples collected from different locations of Hisar district of Haryana have been determined for the first time using HPGe detector based on high-resolution gamma spectrometry system. The range of activity concentrations of 226Ra, 232Th and 40K in the soil from the studied areas varies from 13.37 (Ganguwa) to 21.43 Bq kg-1 (Kheri), 34.67 (Nehla) to 54.43 Bq kg-1 (Ganguwa) and 298.78 (Dhansu) to 398.78 Bq kg-1 (Nehla) with overall mean values of 17.79, 45.45 and 359.96 Bq kg-1, respectively. The absorbed dose rate calculated from activity concentration of 226Ra, 234Th and 40K ranges between 6.16 and 9.88, 21.6 and 33.91, and 12.37 and 16.51 nGy h-1, respectively. The total absorbed dose in the study area ranges from 45.83 to 57.15 nGy h-1 with an average value of 51.42 nGy h-1. The calculated values of external hazard index (Hex) for the soil samples of the study area range from 0.26 to 0.33, which is less than unity