Survey of Indoor concentrations of Radon and Thoron in homes in Bangalore, India

Abstract

Due to the legislation and general concern of radiation levels in dwellings in India, there is a need to continuously monitor the indoor concentrations of radon and Thoron in different geographical areas of Bangalore, which could be of great significance to exposure to occupants, particularly in living places. This paper presents the 222Rn and 220Rn concentrations measured in houses in 10 different locations in Bangalore. The data was continuously obtained for a period of 2 years since 2007, covering more than 150 dwellings. The arithmetic mean values of 222Rn and 220Rn were found to be 35.0 and 21.5 Bq · m-3. The effective dose rate received by the population in the study area ranged between 0.1—0.5 mSv · y-1, the arithmetic mean concentration was 0.2 ± 0.03 mSv · y-1. The result shows no significant radiological risk for the inhabitants.

Indoor radon in dwellings of Jeddah city, Saudi Arabia and its correlations with the radium and radon exhalation rates from soil

“…It is important to note that even though reduced ventilation rate would aid to enhance the radon concentration and that of its daughters in air, the enhanced radiation may be due to the presence of 226 Ra-rich soil or 226 Ra-containing components in building construction material. 21,22 The measurement of radon exhalation rate in soil is helpful to study radon health hazard. Some building materials may be responsible for increased indoor radon levels either due to their higher radon exhalation rates or due to their uranium/radium enrichment as compared to other materials depending on their micro-structure.…”

Identifying Characteristics of Design Guidelines for Elderly Care Environments from the Holistic Health Perspective

“…Many studies have been conducted on the potential of physical built environments that could harm human health [26][27][28][29][30][31][32][33]. In these studies, more attention has been paid to the physical/physiological dimensions of health than to psychological and social dimensions.…”

An innovative method for mitigation of indoor radon

“…According to the currently available literature [20], the concentrations of Rn and Tn in the study area ranged from 17. The previous studies reported the activity concentrations of 226 Ra and 232 Th were found to vary from 8 to 110 Bq kg −1 with a mean of 26 Bq kg −1 , and from 17 to 100 Bq kg −1 with a mean of 53 Bq kg −1 , respectively.…”