Room Model Based Monte Carlo Simulation Study of the Relationship Between the Airborne Dose Rate and the Surface-Deposited Radon Progeny

Details

• Personal Author:
  Field RW ; Steck DJ ; Sun K
• Description:
  The quantitative relationships between radon gas concentration, the surface-deposited activities of various radon progeny, the airborne radon progeny dose rate, and various residential environmental factors were investigated through a Monte Carlo simulation study based on the extended Jacobi room model. Airborne dose rates were calculated from the unattached and attached potential alpha-energy concentrations (PAECs) using two dosimetric models. Surface-deposited (218)Po and (214)Po were significantly correlated with radon concentration, PAECs, and airborne dose rate (p-values <0.0001) in both non-smoking and smoking environments. However, in non-smoking environments, the deposited radon progeny were not highly correlated to the attached PAEC. In multiple linear regression analysis, natural logarithm transformation was performed for airborne dose rate as a dependent variable, as well as for radon and deposited (218)Po and (214)Po as predictors. In non-smoking environments, after adjusting for the effect of radon, deposited (214)Po was a significant positive predictor for one dose model (RR 1.46, 95% CI 1.27-1.67), while deposited (218)Po was a negative predictor for the other dose model (RR 0.90, 95% CI 0.83-0.98). In smoking environments, after adjusting for radon and room size, deposited (218)Po was a significant positive predictor for one dose model (RR 1.10, 95% CI 1.02-1.19), while a significant negative predictor for the other model (RR 0.90, 95% CI 0.85-0.95). After adjusting for radon and deposited (218)Po, significant increases of 1.14 (95% CI 1.03-1.27) and 1.13 (95% CI 1.05-1.22) in the mean dose rates were found for large room sizes relative to small room sizes in the different dose models. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Environmental Exposure Environmental Monitoring Environmental Pollution Occupational Health Radiation Dosimeters Safety Smokers
• Keywords:
  Air Contamination Air Monitoring Author Keywords: Epidemiology Dosimetry Environmental Contamination Environmental Exposure Environmental Hazards Exposure Assessment Exposure Levels Exposure Methods Gases Gas Indicators Gas Sampling Mathematical Models Monitoring Systems Monitors Monte Carlo Quantitative Analysis Radon Radon Daughters Radon Progeny Smoke Inhalation Smoking Statistical Analysis

  More +
• ISSN:
  0017-9078
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Iowa ; Minnesota ; OSHA Region 5 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  29-36
• Volume:
  98
• Issue:
  1
• NIOSHTIC Number:
  nn:20036295
• Citation:
  Health Phys 2010 Jan; 98(1):29-36
• Contact Point Address:
  Daniel J. Steck, Department of Physics, St. John's University, 109 Science Center, Collegeville, MN 56321
• Email:
  dsteck@csbsju.edu
• CAS Registry Number:
  Radon (CAS RN 10043-92-2)
• Federal Fiscal Year:
  2010
• Performing Organization:
  University of Iowa
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Health Physics
• End Date:
  20290630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a828f4ea79ebcbc93105c60e7c7ac7ed0636a5b3646b0bc83016bb009bc13a37c988513e1315f229e84af41065c41ecf3ff68a10c473295d5836e46d3e91f6e3
• Download URL:
  https://stacks.cdc.gov/view/cdc/187777/cdc_187777_DS1.pdf
• File Type:
  [PDF - 586.38 KB ]