Analysis of terrestrial naturally occurring radionuclides in soil samples from some areas of Sirsa district of Haryana, India using gamma ray spectrometry

作者：Mehra Rohit^*; Kumar Sandeep; Sonkawade Rajendra; Singh N P; Badhan Komal

来源：Environmental Earth Sciences, 2010, 59(5): 1159-1164.

DOI：10.1007/s12665-009-0108-3

• Gamma ray spectrometry
• HPGe detector
• Ra(eq) activities
• Annual effective dose
• External hazard index

The activity concentration and the gamma-absorbed dose rates of the terrestrial naturally occurring radionuclides ((232)Th, (226)Ra and (40)K) were determined in soil samples collected from ten different locations of Sirsa district of Haryana, using HPGe detector based on high-resolution gamma spectrometry system. The range of activity concentrations of (226)Ra, (232)Th and (40)K in the soil samples from the studied areas varies from 19.18 Bq kg(-1) (Moriwala) to 40.31 Bq kg(-1) (Rori), 59.43 Bq kg(-1) (Pipli) to 89.54 Bq kg(-1) (Fatehpur) and 223.22 Bq kg(-1) (Moriwala) to 313.32 Bq kg(-1) (SamatKhera) with overall mean values of 27.94, 72.75 and 286.73 Bq kg(-1) respectively. The absorbed dose rate calculated from activity concentration of (226)Ra, (232)Th and (40)K ranges between 8.84 and 18.58, 37.02 and 55.78, and 9.24 and 12.97 nGy h(-1), respectively. The total absorbed dose in the study area ranges from 60.40 to 82.15 nGy h(-1) with an average value of 70.12 nGy h(-1). The calculated values of external hazard index (II(ex)) for the soil samples of the study area range from 0.36 to 0.49 with an average value of 0.42.