Bimodal unattached 218Po radon progeny and the influence of enhanced deposition effect at high-radon levels

Radiation Protection Dosimetry

Volumn 113, Issue 2, 2005, Pages 236-242

  Leonard, Bobby E ^a  

^a International Academy   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

POLONIUM; RADON 222; RADON DAUGHTER;

AIR TEMPERATURE; AIRBORNE PARTICLE; AMBIENT AIR; ARITHMETIC; ARTICLE; CONTROLLED STUDY; ENVIRONMENTAL FACTOR; HUMIDITY; PARTICLE SIZE; PROGENY; RADIATION DOSE DISTRIBUTION; RADIATION EXPOSURE; RADIATION MEASUREMENT; AIR POLLUTANT; ALGORITHM; CHEMICAL MODEL; CHEMISTRY; COMPUTER SIMULATION; IONIZING RADIATION; METHODOLOGY; RADIATION DOSE; RADIATION MONITORING; RISK ASSESSMENT; RISK FACTOR; STANDARD; STATISTICAL MODEL;

AIR POLLUTANTS, RADIOACTIVE; ALGORITHMS; BACKGROUND RADIATION; COMPUTER SIMULATION; MODELS, CHEMICAL; MODELS, STATISTICAL; PARTICLE SIZE; POLONIUM; RADIATION DOSAGE; RADIATION MONITORING; RADON DAUGHTERS; RISK ASSESSMENT; RISK FACTORS;

EID: 18844456068     PISSN: 01448420     EISSN: None     Source Type: Journal    
DOI: 10.1093/rpd/nch453     Document Type: Article

References (24)

1. Reineking, A., Knutson, E. O., George, A. C., Solomon, S. B., Kesten, J. and Butterweck, G. Size distributions of unattached and aerosol-attached short-lived radon decay products: some results of intercomparison measurements. Radiat. Prot. Dosim. 56, 113-118 (1994).
2. Butterweck-Dempewolf, G., Schuler, Ch., Vezzu, G. and Reineking, A. Improved determination of bimodal size distributions from measurements with diffusional size classification. Aerosol Sci. Technol. 31, 383-391 (1999).
3. Butterweck-Dempewolf, G., Schuler, Ch., Vezzu, G., Reineking, A., Hurt, C., Tymen, G., Strong, J. C., Knutson, E. O. and Vargas, A. Intercomparison of approximation algorithms for the determination of the size distribution of the 'unattached' fraction of radon progeny. Aerosol Sci. Technol. 33, 261-273 (2000).
4. 218Po diffusion coefficient measured with the 'two-filter' method. J. Aerosol Sci. 32, 1389-1395 (2001).
5. Leonard, B. E. Radon progeny size distributions and enhanced deposition effects from high radon concentrations in an enclosed chamber. Radiat. Prot. Dosim. 108, 331-343 (2004).
6. Leonard, B. E. Radon-222 surface deposition and resuspension materials. Health Phys. 69, 75-92 (1995).
7. 222Rn levels, enhanced surface deposition, increased diffusion coefficient, humidity, and air change effects. Health Phys. 70, 372-387 (1996).
8. Leonard, B. E. High radon concentrations - progeny enhanced deposition rates from increased particle diffusivity. Health Phys. 85, 476-484 (2003).
9. George, A. C. Measurement of the uncombined fraction of radon daughters with wire screens. Health Phys. 23, 392-394 (1972).
10. Holub, R. E. and Knutson, E. O. Measuring polonium-218 diffusion coefficient spectra using multiple wire screens. In: Proceedings of ACS Symposium Series 331, Chapter 25, pp. 340-356, American Chemical Society, Washington, DC (1987).
11. EML-560. Environmental Measurements Laboratory 1993 Annual Report. US Department of Energy, Chicago, IL, April (1994).
12. Knutson, E. O., George, A. C. and Tu, K. W. The graded screen technique for measuring diffusion coefficient of radon decay products. Aerosol Sci. Technol. 27, 604-624 (1997).
13. Hopke, P. K. and 12 others. The measurement of activity-weighted size distributions of radon progeny methods and laboratory intercomparison studies. Health Phys. 63, 560 (1992).
14. Knutson, E. O. Radon and systematic errors in the graded screen technique for measuring diffusion coefficient of radon decay products. Aerosol Sci. Technol. 27, 604-624 (1997).
15. George, A. C. and Knutson, E. O. Particle size of unattached radon progeny in filtered air. Radiat. Prot. Dosim. 56, 119-121 (1994).
16. 218Po) particles. Health Phys. 40, 333-343 (1981).
17. Frey, G., Hopke, P. K. and Stukel, J. J. Effects of trace gases and water vapor on the diffusion coefficient of polonium-218. Science 211, 480-481 (1981).
18. Goldstein, S. D. and Hopke, P. K. Environmental neutralization of polonium-218. Environ. Sci. Techol. 19, 146-150 (1985).
19. Cheng, Y. S., Yu, C. C., Tung, C. J. and Hopke, P. K. Neutralization of thoron progeny in gases. Health Phys. 64, 155-161 (1994).
20. 218Po ions by small ion recombination. Health Phys. 61, 209-214 (1991).
21. Chu, K. D. and Hopke, P. K. Neutralization kinetics for polonium-218. Environ. Sci. Technol. 22(6), 711-717 (1988).
22. 218Po ions in air. Radiat. Prot. Dosim. 94, 353-357 (2001).
23. 218 Po - clusters in air. Atmos. Environ. 37, 1057-1064 (2003).
24. Porstendorfer, J. Physical parameters and dose factors of the radon and thoron decay products. Radiat. Prot. Dosim. 94, 365-373 (2001).