ANALYSIS AND MODELLING OF RADIOECOLOGICAL CONCENTRATION PROCESSES IN THE FOOD CHAIN LICHEN - REINDEER – MAN

Activity: Talk or presentationInvited talk

Description

ANALYSIS AND MODELLING OF RADIOECOLOGICAL CONCENTRATION PROCESSES IN THE FOOD CHAIN LICHEN - REINDEER – MAN Bertil R.R. Persson, Lund University, Medical Radiation Physics, 22185 Lund, Sweden. E-mail: bertil_r.persson@med.lu.se Abstract This presentation deals with analysis and modelling of the natural radionuclides 210Pb and 210Po in the food-chain lichen, reindeer, man and predators. The analysis and modelling of 210Po and 137Cs in lynx (Lynx lynx), wolverine (Gulo gulo) and wolves (Canis lupus) will be presented separately in “Radioecological Informatics and Modelling of Polonium-210 and Caesium-137 in top predators” (Persson et al., 2016 ). By using the methods of Partial Least Square regression (PLSR) the atmospheric deposition of 210Pb and 210Po is predicted at various locations (Persson, 2016). Dynamic modelling of the activity concentration with differential equations is matched to coincide with sample data. Reindeer lichen consumption, gastrointestinal absorption and organ distribution is derived from information in the literature. The results of dynamic modelling the transfer of 210Pb and 210Po to reindeer meat, liver and bone from lichen consumption is compared with measurements of samples collected in Sweden and Finland during 1966-1971. The dynamic modelling of 210Pb and 210Po activity concentration in various organs of man is matched to coincide with that of samples collected from reindeer breeders in Sweden and Finland during 1966-1971. The activity concentration of 210Pb in the skeleton is modelled by using the results of studying the kinetics of lead in skeleton and blood in lead-workers after end of occupational exposure. The result of modelling 210Pb and 210Po activity in skeleton is compared with samples of teeth from reindeer-breeders and autopsy bone samples in Finland.
Period2016 Nov 62016 Nov 9
Event titleII INTERNATIONAL CONFERENCE ON RADIOECOLOGICAL CONCENTRATION PROCESSES (50 years later)
Event typeConference
Location Seville, SpainShow on map

UKÄ subject classification

  • Medical and Health Sciences