Assessment of radiological impacts of natural radionuclides and radon exhalation rate measured in the soil samples of Himalayan foothills of Uttarakhand, India

2019 ◽  
Vol 323 (1) ◽  
pp. 263-274 ◽  
Author(s):  
Km. Anamika ◽  
R. Mehra ◽  
P. Malik
Keyword(s):  
Natural Radionuclides ◽  
Soil Samples ◽  
Radon Exhalation Rate ◽  
Exhalation Rate ◽  
Radon Exhalation ◽  
Himalayan Foothills

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

2017 ◽  
Vol 10 ◽  
pp. 117862211774694 ◽  
Author(s):  
CS Kaliprasad ◽  
PR Vinutha ◽  
Y Narayana
Keyword(s):  
Gamma Ray ◽  
Natural Radionuclides ◽  
Soil Samples ◽  
Radon Exhalation Rate ◽  
Exhalation Rate ◽  
Cauvery River ◽  
Mean Values ◽  
Radon Exhalation ◽  
The Mean ◽  
Recommended Level

In this study, systematic measurement of activity concentrations of 40K, 226Ra, and 232Th and radon exhalation rate has been done in soil samples of Cauvery River environment. The activity was measured using HPGe gamma-ray spectrometer, and the mean values of 40K, 226Ra, and 232Th in the soil samples were found to be 182 ± 4, 34 ± 2, and 19 ± 1 Bq kg−1, respectively. The radon exhalation rate was measured by “Can technique” using SSNTD (LR-115) films. The mean values of radium concentration, surface exhalation, and mass exhalation rate were found to be 118.95, 293.61, and 108.53 mBq kg−1 h−1, respectively. The radiological hazard indices due to natural radioactivity were calculated and compared with international recommended values, which are lower than the recommended level. The radon exhalation rate is lower than the recommended level.

The study of natural radionuclides and radon exhalation rate in ceramic materials containing fly ash developed in Israel

2004 ◽  
Vol 92 (4-6) ◽  
Author(s):  
N. Lavi ◽  
Z. B. Alfassi
Keyword(s):  
Fly Ash ◽  
Radiation Dose ◽  
Building Materials ◽  
Natural Radionuclides ◽  
Construction Materials ◽  
Ceramic Materials ◽  
Radon Exhalation Rate ◽  
Exhalation Rate ◽  
Radon Exhalation ◽  
Ceramic Blocks

AbstractThe ionizing radiation dose from building materials containing fly ash (FA) has been studied. Ceramic products, plates, bricks and blocks containing fly ash have been studied and compared to other construction materials for both natural radionuclides content (NORM), radon exhalation rate and gamma radiation dose .The total radiation dose due to walls built from ceramic blocks containing FA (45% fly ash), was found to be lower than radiation doses due to walls of other construction materials, Assuming two walls (the exterior ones) built of this ceramic material the doses are 0.09-0.13 mSv/y for ceramic materials densities of 800 and 1200 kg/m

scholarly journals NATURAL RADIONUCLIDE DISTRIBUTION AND RADON EXHALATION RATE FROM THE SOIL IN VILNIUS CITY

2007 ◽  
Vol 15 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Dainius Jasaitis ◽  
Aloyzas Girgždys
Keyword(s):  
Building Materials ◽  
Natural Radionuclides ◽  
Natural Radionuclide ◽  
Radon Exhalation Rate ◽  
Clay Loam ◽  
Exhalation Rate ◽  
Radon Exhalation ◽  
Radionuclide Distribution ◽  
The City ◽  
Different Soils

In the territory of Vilnius city radioisotopic composition of different soils was experimentally determined and radon exhalation rate from the soil was evaluated using these data. Specific activitys of natural radionuclides 226Ra, 232Th and 40K were measured. From identified natural radionuclides the biggest quantities were for 40K (263 Bq/kg), the smallest values ‐ for 232Th (5 Bq/kg), average 226Ra values reached 13 Bq/kg. Radon exhalation rate from the soil in Vilnius city was calculated and evaluated. Distribution of radon exhalation rate values in the whole territory of the city is stated. The received values vary from 15 Bq/m2·h (in clay loam) to 23 Bq/m2·h (in sand). It is assessed that of the most important parameters, which determine radon exhalation rate from the soil, are the quantity of radium and the porosity of the soil. It is observed that radon exhalation rate from the soil is bigger than that from building materials. This difference is determined by a bigger porosity of the soil.

Natural radionuclides content and radon exhalation rate from Brazilian phosphogypsum piles

2013 ◽  
Vol 299 (1) ◽  
pp. 261-264 ◽  
Author(s):  
Marcelo Bessa Nisti ◽  
Marcia Pires de Campos ◽  
Barbara Paci Mazzilli
Keyword(s):  
Natural Radionuclides ◽  
Radon Exhalation Rate ◽  
Exhalation Rate ◽  
Radon Exhalation
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