Modeling Radionuclide Transfer from Pasture to Milk in Kisoro, South-western Uganda

Determination of radionuclide transfer from animal feeds to products and ingestion rates is important in assessing internal radiation risk humans who consume the products. Seventy-nine (79) pasture samples milk were collected cattle farms seven sub-counties. Activity concentrations radionuclides determined using gamma spectroscopy. Transfer ratios calculated. Ingestion cow also determined. Radionuclide accumulation body was modeled. Contributions radiological effects due estimated. uranium thorium varied 0.07 0.17, 0.05 respectively. The 3.110-6 7.6 10-6 y l-1 while for thorium, 2.2 7.5 l-1. contribution radium equivalent (Bq l-1), annual effective dose (mSv excess lifetime cancer Risk 0.074, 0.002, 0.0061 10-3, Comparing with safe values foodstuffs 0.14 mSv which translates 0.42 these contributions only account about 1.5% total value risk, therefore, causes a minimal hazard consumers Kisoro District.