Interception and retention of radioactive aerosols by vegetation

Pathway: A Simulation Model of Radionuclide Transport through Agricultural Food Chains

“…Weathering is usually described in the literature as a first order rate process. Rainfall events have little or no effect upon the rate of weathering (Chamberlain 1970). The rata of weathering seems to be most dependent upon whether the radioactivity is in the fora of a particulate or a gas.…”

“…The partitioning of the fallout between the surface of the soil and the surfaces of vegetation depends upon the aboveground biomass of the vegetation. The proportion of the fallout allocated to the surface of the vegetation, P., is given by -orB where, Pd = 1 -e B = biomass, dry kg/m a = a constant, nr/kg (Chamberlain 1970 Tillage of soil redistributes radioactivity between the soil surface (0-0.1 cm) and the subsurface soil of the plow layer (0.1-25 cm). The importance of tillage in determining the concentration of radioactivity in food products is dependent upon the relative timing between the deposition and tillage events.…”

Integrated Codes for Estimating Environmental Accumulation and Individual Dose from Past Hanford Atmospheric Releases: Hanford Environmental Dose Reconstruction Project

“…Deposition and foliar interception is the basic process for transfer of material from atmosphere to vegetation and soil and, thus, has been widely studied. The interception fraction calculated by the model is based on work by Chamberlain (1970) and observations by Pinder et al (1988Pinder et al ( , 1989. The interception fraction is calculated as The constant a and the variable B are usually defined in terms of dry biomass, 8 being a daily input from the biomass submodel.…”

Computer Code TERFOC-N to Calculate Doses to Public Using Terrestrial Foodchain Models Improved and Extended for Long-Lived Nuclides

“…cfeed) ( 4) where fnL ( 5) Concentration of 14 C in crops at the time of harvest Cpc (Bq/kg) is estimated as follows: …”