タグ「Resuspension」
Title: Resuspension of coarse fuel hot particles in the Chernobyl area
Author: Florian Wagenpfeil, Jochen Tschiersch
Reference: Journal of Environmental Radioactivity, Volume 52, Issue 1, January 2001, Pages 5-16
DOI: http://dx.doi.org/10.1016/S0265-931X(00)00081-3
Keywords: Resuspension; Chernobyl fallout; Hot particles; Aerosol sampler; Digital autoradiography
Abstract: Measurements of resuspended aerosol in the Chernobyl 30-km exclusion zone have shown coarse fuel hot particles in the activity range 1–12 Bq per particle. The particles were sampled with newly designed rotating arm impactors which simultaneously collect during the same experiment three samples with fuel particles in the size ranges larger than 3 μm, larger than 6 μm and larger than 9 μm in geometric diameter. The radionuclide ratios, determined after γ-spectrometry, were in good agreement with the theoretical calculations for the radionuclide-composition of the Chernobyl Nuclear Power Plant at the moment of the accident and the measured hot particles in soil in the early years after the accident. The number concentrations of airborne hot particles were derived from digital autoradiography. For wind resuspension, maximal concentrations of 2.6 coarse hot particles per 1000 m3 and during agricultural activities 36 coarse hot particles per 1000 m3 were measured. The geometric diameter of single hot particles was estimated to be between 6 and 12 μm.
URL: http://www.sciencedirect.com/science/article/pii/S0265931X00000813
Title: Resuspension of coarse fuel hot particles in the Chernobyl area
Author: Wagenpfeil, Florian / Tschiersch, Jochen
Reference: Journal of Environmental Radioactivity, 52 (1), p.5-16, Jan 2001
doi: 10.1016/S0265-931X(00)00081-3
Keywords: Resuspension; Chernobyl fallout; Hot particles; Aerosol sampler; Digital autoradiography
Abstract: Measurements of resuspended aerosol in the Chernobyl 30-km exclusion zone have shown coarse fuel hot particles in the activity range 1–12 Bq per particle. The particles were sampled with newly designed rotating arm impactors which simultaneously collect during the same experiment three samples with fuel particles in the size ranges larger than 3 μm, larger than 6 μm and larger than 9 μm in geometric diameter. The radionuclide ratios, determined after γ-spectrometry, were in good agreement with the theoretical calculations for the radionuclide-composition of the Chernobyl Nuclear Power Plant at the moment of the accident and the measured hot particles in soil in the early years after the accident. The number concentrations of airborne hot particles were derived from digital autoradiography. For wind resuspension, maximal concentrations of 2.6 coarse hot particles per 1000 m3 and during agricultural activities 36 coarse hot particles per 1000 m3 were measured. The geometric diameter of single hot particles was estimated to be between 6 and 12 μm.
URL: http://www.sciencedirect.com/science/article/pii/S0265931X00000813
- Title: A comparison of 90Sr and 137Cs uptake in plants via three pathways at two Chernobyl-contaminated sites.
Author: Malek, M A / Hinton, T G / Webb, S B
Reference: Journal of environmental radioactivity, 58 (2-3), p.129-141, Jan 2002
doi: http://dx.doi.org/10.1016/S0265-931X(01)00062-5
Keywords: Foliar absorption; Resuspension; Soil loading; 137Cs; 90Sr; Root uptake; Risk
Abstract: Foliar absorption of resuspended 90Sr, root uptake and contamination adhering to leaf surfaces (i.e. soil loading) were compared at two Chernobyl-contaminated sites, Chistogalovka and Polesskoye. Although foliar absorption of resuspended 90Sr was quantifiable, its contribution amounted to less than 10% of the plants’ total, above-ground contamination.
URL: http://www.sciencedirect.com/science/article/pii/S0265931X01000625
