Biomaterial Database

Estimation of annual effective dose from indoor radon/thoron concentrations and measurement of radon concentrations in soil. 2014

Rohit Mehra, and Pankaj Bala

Department of Physics, Dr. B .R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India.

Radon short-lived decay products generated from the earth is one of the serious indoor air and soil pollutants. The RAD-7 Electronic Radon Detector with a special accessory is used for the purpose of measurement. The radon and thoron concentrations in the houses of the study area are found to vary from 35±0.5 to 315.2±5.35 Bq m(-3) and 66.1±2.3 to 1710±139.36 Bq m(-3) with the average values of 98.65±1.9 and 388.19±11 Bq m(-3), respectively. From indoor air, the total annual effective dose is calculated and it varies from 0.88 to 7.94 mSv y(-1). The preliminary investigation shows that the thoron concentration is higher than the radon concentration in the houses of the study area. In general, the values of the indoor air are within the recommended action level of the International Commission on Radiological Protection, 2009.

UI	MeSH Term	Description	Entries
D011829	Radiation Dosage	The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).	Sievert Units,Dosage, Radiation,Gray Units,Gy Radiation,Sv Radiation Dose Equivalent,Dosages, Radiation,Radiation Dosages,Units, Gray,Units, Sievert
D011834	Radiation Monitoring	The observation, either continuously or at intervals, of the levels of radiation in a given area, generally for the purpose of assuring that they have not exceeded prescribed amounts or, in case of radiation already present in the area, assuring that the levels have returned to those meeting acceptable safety standards.	Monitoring, Radiation
D011886	Radon	A naturally radioactive element with atomic symbol Rn, and atomic number 86. It is a member of the noble gas family found in soil, and is released during the decay of RADIUM.	Actinon,Thoron (Element)
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000396	Air Pollutants, Radioactive	Pollutants present in air which exhibit radioactivity.	Radioactive Air Pollutants,Pollutants, Radioactive Air
D012990	Soil Pollutants, Radioactive	Pollutants, present in soil, which exhibit radioactivity.	Pollutants, Radioactive Soil,Radioactive Soil Pollutants
D016902	Air Pollution, Indoor	The contamination of indoor air.	Air Quality, Indoor,Indoor Air Pollution,Indoor Air Quality,Pollution, Indoor Air