Radon concentration in water, soil and sediment of Hemavathi River environments

Abstract

The present paper discusses the systematic study on gamma dose rate, radon exhalation, radium content in soil and sediment and radon concentration in water of Hemavathi River environments. The Gamma dose rate in the air in the study area varied from 98 to 202 nGy h−1 with mean value 145 nGy h−1. The measured dose rate was above the world and Indian average. The mean value of radium activity in soil and sediment was found to be 366.61 and 328.36 mBq kg−1, respectively. The mean value of radon in soil and sediment was found to be 373.90 and 334.90 Bq m−3, respectively. The radon concentration of water ranges from 0.20 to 1.60 kBq m−3 with an average value of 0.67 kBq m−3. The radon in water contributes to dosage in stomach and lungs. The effective doses of radon were calculated and compared with international recommended values. The results show that sediment and water are safe to use for construction and drinking purpose.

A study on measuring the 222Rn in the Buriganga River and tap water of the megacity Dhaka

“…These were the significant reasons for the low 222 Rn level in this river water. Additionally, the result of this study is consistent with the previous research carried out in different regions of the world, such as in Karnataka, India (0.16-1.79 Bq/L) [38], Hemavathi River India (0.67 Bq/L) [39], Kirkuk, Iraq (0.359Bq/L) [40].…”

“…As illustrated in Table 4, the 222 Rn concentration in the ten tap water samples collected from Dhaka city varied from 0.56 ± 0.30 to 3.06 ± 0.60 Bq/L with an average of 1.54 ± 0.38 Bq/L. Edu, Nigeria 19.14 ± 3.98 [37] Punjab, India 3.37 ± 0.29 [1] Rajouri, Pir Panjal 60 [36] Kirkuk, Iraq 0.359 [40] Hemavathi River, India 0.67 [39] Transylvania, Romania 0.9-4.5 [41] Karnataka, India 0.16-1.79 [38] Dhaka, Bangladesh 0.68 ± 0.…”

Natural Radionuclides and Radon Exhalation Rate in the Soils of Cauvery River Basin

“…About 100 g of the dried and sieved (250 μm) soil sample was taken in each "Can" (diameter: 7.0 cm and height: 10.5 cm), Air, Soil and Water Research and LR-115 Type II SSNT detector (3 cm × 3 cm) was fixed on the top inside of each "Can." 5 The "Can" was kept airtight for 4 hours to allow the radon and its progeny to reach equilibrium. The equilibrium activity of the emergent radon was calculated based on the geometry of the "Can" and the time of exposure.…”