INVESTIGADORES
VELASCO Ricardo Hugo
artículos
Título:
Proposal for new best estimates of the soil-to-plant transfer factor of U, Th, Ra, Pb and Po
Autor/es:
VANDENHOVE, H.; OLYSLAEGERS, G.; REED, E.; SHANG, Z.; VELASCO, H
Revista:
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
Editorial:
ELSEVIER SCI LTD
Referencias:
Año: 2009 vol. 100 p. 721 - 732
ISSN:
0265-931X
Resumen:
There is increasing interest in radiological assessment of discharges of naturally occurring radionuclides
into the terrestrial environment. Such assessments require parameter values for the pathways considered
in predictive models. An important pathway for human exposure is via ingestion of food crops and
animal products. One of the key parameters in environmental assessment is therefore the soil-to-plant
transfer factor to food and fodder crops. The objective of this study was to compile data, based on an
extensive literature survey, concerning soil-to-plant transfer factors for uranium, thorium, radium, lead,
and polonium. Transfer factor estimates were presented for major crop groups (Cereals, Leafy vegetables,
Non-leafy vegetables, Root crops, Tubers, Fruits, Herbs, Pastures/grasses, Fodder), and also for some
compartments within crop groups. Transfer factors were also calculated per soil group, as defined by
their texture and organic matter content (Sand, Loam, Clay and Organic), and evaluation of transfer
factors dependency on specific soil characteristics was performed following regression analysis. The
derived estimates were compared with estimates currently in use.