Author Index
(Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Tags: Author Index Source Type: research
First National Conference on Radiation Awareness and Detection in Natural Environment Tehri Garhwal, India, 15-17 June 2015: List of participants
(Source: Radiation Protection Dosimetry)
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Tags: List of Participants Source Type: research
Distribution of 210po in hemavathi riverine environment
In the present investigation, the concentration of 210Po was measured in soil and sediment samples from riverine environment of Hemavathi river of south Karnataka. The 210Po in the samples was separated by radiochemical method, and the activity was counted using ZnS(Ag) alpha counter. Seasonal variation of 210Po was studied for soil and sediment samples. The mean activity of 210Po in monsoon was higher than that in pre-monsoon samples. The granulometric contents (sand, silt and clay), organic matter and pH contents were measured in soil, and sediment, respectively. The organic matter content and clay positively correlated ...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Kaliprasad, C. S., Narayana, Y. Tags: Paper Source Type: research
STUDY OF NATURAL RADIOACTIVITY (226Ra, 232Th AND 40K) IN SOIL SAMPLES FOR THE ASSESSMENT OF AVERAGE EFFECTIVE DOSE AND RADIATION HAZARDS
The activity concentration of 226Ra (radium), 232Th (thorium) and 40K (potassium) has been measured in the soil samples collected from Mansa and Muktsar districts of Punjab (India) using NaI (Tikl) gamma detector. The concentration of three radionuclides (226Ra, 232Th and 40K) in the studied area has been varied from 18±4 to 46±5, 53±7 to 98±8 and 248±54 to 756±110 Bq kg–1, respectively. Radium equivalent activities (Raeq) have been calculated in soil samples for the assessment of the radiation hazards arising due to the use of these soil samples. The absorbed dose rate of 22...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Bangotra, P., Mehra, R., Kaur, K., Jakhu, R. Tags: Paper Source Type: research
Natural radioactivity in sediments and river bank soil of kallada river of kerala, south india and associated radiological risk
The paper presents the activity concentrations of 232Th, 226Ra and 40K in the sediments and river bank soil samples collected from the Kallada river environs of coastal Kerala. The radiological risks associated with these radionuclides were calculated. The samples were processed following standard procedure, and activity was counted using a high-efficiency 5'' x 5'' NaI (Tl) detector coupled to GSPEC gamma spectroscopy system. The mean values of measured activities of 232Th, 226Ra and 40K in soil samples were found to be 98.1 ± 0.4, 60.3 ± 1.1 and 343.4 ± 1.8 Bq kg–1, respectively, which results ...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Venunathan, N., Kaliprasad, C. S., Narayana, Y. Tags: Paper Source Type: research
Study of radon flux from soil in budhakedar region using srm
In the present study, the radon flux rate of the soil is measured using portable radon monitor (scintillation radon monitor) in the Budhakedar region of District Tehri, India. The study area falls along a fault zone named Main Central Thrust, which is relatively rich in radium-bearing minerals. Radon flux rate from the soil is one of the most important factors for the evaluation of environmental radon levels. The earlier studies in the Budhakedar region shows a high level of radon (>4000 Bq m–3). Hence, it is important to measure the radon flux rate. The aim of the present study is to calculate the average estimat...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Bourai, A. A., Aswal, S., Kandari, T., Kumar, S., Joshi, V., Sahoo, B. K., Ramola, R. C. Tags: Paper Source Type: research
SOIL 222Rn CONCENTRATION, CO2 AND CH4 FLUX MEASUREMENTS AROUND THE JWALAMUKHI AREA OF NORTH-WEST HIMALAYAS, INDIA
Soil 222Rn concentration, CO2 and CH4 flux measurements were conducted around the Jwalamukhi area of North-West Himalayas, India. During this study, around 37 soil gas points and flux measurements were taken with the aim to assure the suitability of this method in the study of fault zones. For this purpose, RAD 7 (Durridge, USA) was used to monitor radon concentrations, whereas portable diffuse flux meter (West Systems, Italy) was used for the CO2 and CH4 flux measurements. The recorded radon concentration varies from 6.1 to 34.5 kBq m–3 with an average value of 16.5 kBq m–3. The anomalous value of radon concen...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Kumar, A., Walia, V., Yang, T. F., Fu, C.-C., Singh, S., Bajwa, B. S., Arora, V. Tags: Paper Source Type: research
Assessment of age-dependent radiation dose due to intake of uranium and thorium in drinking water from sikar district, rajasthan, india
The concentrations of 238U and 232Th have been determined in drinking water samples collected from the Sikar district of Rajasthan State, India. The samples have been analysed by using high-resolution inductively coupled plasma mass spectrometry. 238U content in water samples ranged from 8.20 to 202.63 µg l–1 and 232Th content ranged from 0.57 to 1.46 µg l–1. The measured 238U content in 25 % of the analysed samples exceeded the World Health Organization (WHO) and United States Environmental Protection Agency drinking water guidelines of 30 µg l–1 and 12.5 % of the samples exceeded the 6...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Duggal, V., Rani, A., Balaram, V. Tags: Paper Source Type: research
A comparative study of radium content and radon exhalation rate from soil samples using active and passive techniques
Soil is the most important factor affecting the radon level in the human living environments. It depends not only on uranium and thorium contents but also on the physical and chemical properties of the soil. In this paper, the measurements of radium content and mass exhalation rate of radon from the soil samples collected from Uttarkashi area of Garhwal Himalaya are presented. The correlation between radium content and radon mass exhalation rate from soil has also been obtained. The radium was measured by gamma ray spectrometry, while the mass exhalation rate of radon has been determined by both active and passive methods....
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Yadav, M., Prasad, M., Joshi, V., Gusain, G. S., Ramola, R. C. Tags: Paper Source Type: research
Measurement of indoor radon-thoron in air and exhalation from soil in the environment of western haryana, india
Measurement of indoor radon and thoron is important because the inhalation of radon–thoron and their daughters contributes more than 50 % of the total dose from natural sources. One of the important parameters to find out the contribution of soil and building materials towards indoor radon is radon exhalation rates, which can be used for estimation of indoor radon levels. The indoor radon and thoron levels from the air and radon exhalation rates from soil samples collected from two districts (Hisar and Fatehabad) of Western Haryana are measured using pin-hole-based radon–thoron dosimeter and LR-115 solid-state ...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Mann, N., Kumar, A., Kumar, S., Chauhan, R. P. Tags: Paper Source Type: research
Emission of soil gas radon concentration around main central thrust in ukhimath (rudraprayag) region of garhwal himalaya
In this paper, the result of systematic measurement of the soil gas radon concentrations is discussed and the background values are defined along and around the Main Central Thrust (MCT) in Ukhimath region of Garhwal Himalaya, India. The Ukhimath region is being subjected to intense neotectonic activities like earthquake and landslide. For the systematic study, the measurement has been done in grid pattern form along and across the MCT. The soil gas radon concentrations were measured using RAD7 with appropriate accessories and followed proper protocol proposed by the manufacturer. The soil gas concentration was measured at...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Aswal, S., Kandari, T., Sahoo, B. K., Bourai, A. A., Ramola, R. C. Tags: Paper Source Type: research
Radium and radon exhalation rate in soil samples of hassan district of south karnataka, india
The radon exhalation rate was measured in 32 soil samples collected from Hassan district of South Karnataka. Radon exhalation rate of soil samples was measured using can technique. The results show variation of radon exhalation rate with radium content of the soil samples. A strong correlation was observed between effective radium content and radon exhalation rate. In the present work, an attempt was made to assess the levels of radon in the environment of Hassan. Radon activities were found to vary from 2.25±0.55 to 270.85±19.16 Bq m–3 and effective radium contents vary from 12.06±2.98 to 1449.5...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Jagadeesha, B. G., Narayana, Y. Tags: Paper Source Type: research
Measurement of radon, thoron and their progeny concentrations in the dwellings of pauri garhwal, uttarakhand, india
It is well known that inhalation of radon, thoron and their progeny contributes more than 50 % of natural background radiation dose to human being. The time-integrated passive measurements of radon, thoron and their progeny concentrations were carried out in the dwellings of Pauri Garhwal, Uttarakhand, India. The measurements of radon and thoron concentrations were performed by LR-115 detector-based single-entry pin-hole dosemeter, while for the measurement of progeny concentrations, LR-115 deposition-based direct radon and thoron progeny sensors technique was used. The experimental techniques and results obtained are disc...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Joshi, V., Dutt, S., Yadav, M., Mishra, R., Ramola, R. C. Tags: Paper Source Type: research
Natural radionuclide levels in sediments of cauvery riverine environment
The paper presents the systematic measurement of activity concentrations of 40K, 226Ra and 232Th in sediment sample of Cauvery river of Karnataka, South India. Activity was measured using HpGe gamma ray spectrometer, and the mean values of 40K, 226Ra and 232Th in the sediment samples were found to be 144.31, 32.05 and 61.70 Bq kg–1, respectively. To assess the radiological hazards in the samples, radium equivalent (Raeq), absorbed dose (D), annual effective equivalent dose (AEED), activity utilisation index (AUI) and annual gonadal dose equivalent (AGDE) values associated with the radionuclides were calculated and co...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Narayana, Y., Kaliprasad, C. S., Sanjeev, G. Tags: Paper Source Type: research
Measurement of radon, thoron and their progeny in different types of dwelling in almora district of kumaun himalayan region
The indoor concentrations of radon (222Rn), thoron (220Rn) and their daughter products were measured in the dwellings of Almora district in Kumaun Himalaya, India using pin-hole dosemeters and deposition progeny sensors. The measurements were made in the residential houses built of mud, stone with cement plaster and cemented house during winter season. Average [geometric mean (GM) values] radon and thoron concentrations for all dwellings were found to be 99.82 and 79.70 Bq m–3, respectively, while average equilibrium equivalent radon concentration and equilibrium equivalent thoron concentration (measured for the firs...
Source: Radiation Protection Dosimetry - October 27, 2016 Category: Radiology Authors: Singh, K., Semwal, P., Pant, P., Gusain, G. S., Joshi, M., Sapra, B. K., Ramola, R. C. Tags: Paper Source Type: research
