One year of 222Rn concentration at a typical rural site in South India
Authors:
- 1 April 2021
- journal article
- research article
- Published by Medknow in Radiation Protection and Environment
- Vol. 44 (2) , 73-78
Abstract
The simultaneous measurements of atmospheric radon, ambient gamma radiations dose, and relevant meteorological parameters were carried out at the National Atmospheric Research Laboratory (NARL), Gadanki, India (13.459° N, 79.175° E) during June 2013–May 2014 are analyzed and presented. The results show that radon strongly correlates with temperature, relative humidity, and a weak correlation with air pressure, ambient gamma dose during fair weather days. Radon's well-defined monthly variability is observed, with the highest during winter and lowest during monsoon season. The fast Fourier transform analysis revealed a hidden memory in variations in radon activity with prominent peaks at 24 h and 12 h, indicating the influence of atmospheric stability on the abundance of radon in air. About 99% of radon activity lies below 70 Bq/m3 with a mean value of 11.81 ± 4.83 Bq/m3, and about 99% ambient gamma dose levels range from 140 to 240 nSv/h at NARL with a mean value of 192.17 ± 17.43 nSv/h. The ambient gamma dose levels are well within limits prescribed by the UNSCEAR.Keywords
This publication has 19 references indexed in Scilit:
- Radiological assessment of indoor radon concentrations and gamma dose rates in secondary school buildings in KuwaitConstruction and Building Materials, 2018
- Activity of radon (222Rn) in the lower atmospheric surface layer of a typical rural site in south IndiaJournal of Earth System Science, 2016
- Analysis of simultaneous time series of indoor, outdoor and soil air radon concentrations, meteorological and seismic dataNukleonika, 2016
- Diurnal variations of 218Po, 214Pb, and 214Po and their effect on atmospheric electrical conductivity in the lower atmosphere at Mysore city, Karnataka State, IndiaJournal of Environmental Radioactivity, 2014
- Performance comparison of electronic radon monitorsApplied Radiation and Isotopes, 2013
- Radon activity in the lower troposphere and its impact on ionization rate: a global estimate using different radon emissionsAtmospheric Chemistry and Physics, 2011
- Possible effect of solar tides on radon signalsJournal of Environmental Radioactivity, 2011
- One year of 222Rn concentration in the atmospheric surface layerAtmospheric Chemistry and Physics, 2006
- Studies on atmospheric electrical conductivity related to radon and its progeny concentrations in the lower atmosphere at MysoreAtmospheric Environment, 2006
- Diurnal and seasonal variations of radioactivity and electrical conductivity near the surface for a continental location Mysore, IndiaAtmospheric Research, 2005