Characteristics of 222Rn and 220Rn equilibrium factors in the indoor environments.
J Environ Radioact
; 268-269: 107262, 2023 Nov.
Article
in En
| MEDLINE
| ID: mdl-37542796
ABSTRACT
Humans receive a significant portion (Ë50%) of the total dose attributed to all the natural radiation sources from indoor radon (222Rn), thoron (220Rn), and their progeny. While progeny contributes an overwhelming part to the dose, in most surveys, only radon gas is measured because of the simplicity of measurement. Progeny concentration is usually estimated by multiplying gas concentration with an assumed factor, called the equilibrium factor, and taken from literature. Recently, results of the measurements of equilibrium factors for 222Rn and 220Rn were reported from various parts of the globe. In India, many such studies have been conducted in the current decade. The studies show a wide variation of equilibrium factors which suggests that they depend on environmental factors and measurement conditions. Therefore, they should be determined site specifically if accurate site-specific dose estimation is targeted. This paper summarizes concepts, definitions, and methods to determine equilibrium factors and reviews literature about reported equilibrium factors worldwide, focusing on data reported from India.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Radiation Monitoring
/
Radon
/
Air Pollution, Indoor
/
Air Pollutants, Radioactive
Limits:
Humans
Country/Region as subject:
Asia
Language:
En
Journal:
J Environ Radioact
Year:
2023
Document type:
Article