Indoor /sup 222/Rn measurements in the region of Beijing, People's Republic of China

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Health Phys.; (United States)

OSTI ID:6078929

Ren, T S; Lin, L Q; Chen, Z P; Li, G Y; Chen, A M

Passive integrating activated C detectors were used to study the regional distribution and temporal variation of /sup 222/Rn in indoor air in dwellings in the Beijing region. Measurements were made in 537 dwellings, which were either detached houses or multi-family apartments. The city-wide study was completed in 1985. The distributions are approximately log-normal with 90% of the dwellings having /sup 222/Rn levels less than 60 Bq m-3. The weighted average /sup 222/Rn concentration has been found to be 22.4 Bq m-3. Averages for detached houses and multi-family dwellings are 25.9 and 15.2 Bq m-3, respectively. Assuming an equilibrium factor of 0.5 and an occupancy factor of 0.8, the average equilibrium equivalent concentration of /sup 222/Rn progeny is 11.2 Bq m-3 and the annual average effective dose equivalent is 1.1 mSv.

• Research Organization: Laboratory of Industrial Hygiene, MPH, Deshengmenwai, Beijing, People's Republic of China
• OSTI ID: 6078929
• Journal Information: Health Phys.; (United States), Journal Name: Health Phys.; (United States) Vol. 53:3; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ALPHA DECAY RADIOISOTOPES
ASIA
BUILDINGS
CHINA
DAYS LIVING RADIOISOTOPES
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
HEAVY NUCLEI
HOUSES
INDOOR AIR POLLUTION
ISOTOPES
MASS TRANSFER
MONITORING
NUCLEI
POLLUTION
RADIATION MONITORING
RADIOECOLOGICAL CONCENTRATION
RADIOISOTOPES
RADIONUCLIDE MIGRATION
RADON 222
RADON ISOTOPES
RESIDENTIAL BUILDINGS