Transfer of radionuclides to fruit

A study has been carried out to determine soil-plant transfer factors relevant to fruit crops. The current default values for¹³⁷Cs, Pu and Am used in the NRPB food-chain model FARMLAND were generally higher than the TFs observed. Lower values would be more appropriate for general assessments. For the United Kingdom, the current approach in which TF values for apples are applied to all domestically produced fruit is considered reasonable. This study also indicates that the assumption that TFs for fruit are the same as those for green vegetables is reasonable for¹³⁷Cs, Pu and Am, but, for⁹⁰Sr, data specific to apples would be preferable.