Translocation studies of 137Cs and 90Sr in bean plants (Phaseolus vulgaris): simulation of fallout.
In case of an accident at a nuclear power plant with liberation of radioactive material into the atmosphere, knowledge about the behavior of plant species when in contact with radionuclides is indispensable for safety reasons. The leaf-fruit translocation is an important route through which agricultural products are contaminated by radionuclides. To quantify the leaf-fruit translocation factors for 137Cs and 90Sr in common beans (Phaseolus vulgaris) an experiment was carried out in a greenhouse with a randomized block design. 137Cs activity was determined by gamma-ray spectrometry, while chemical separation followed by beta counting of 90Y was used for 90Sr determination. The model applied for translocation indicated functional dependence between the moment of tracer application and the physiological development of the bean plant. Translocation factors obtained for 137Cs and 90Sr were 0.16 and less than 0.005, respectively.
Poços de Caldas Laboratory, Brazilian National Commission for Nuclear Energy, DILAB/CNEN, Poços de Caldas MG.
José Flávio
JF
Macacini
Elisabete A
EA
De Nadai Fernandes
Maria Helena T
MH
Taddei
D002588:Cesium Radioisotopes / Q000032:analysis / Q000493:pharmacokinetics; D004784:Environmental Monitoring; D005506:Food Contamination; D005638:Fruit / Q000737:chemistry; D027805:Phaseolus / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D011210:Power Plants; D011847:Radioactive Fallout / Q000032:analysis*; D018788:Radioactive Hazard Release; D011868:Radioisotopes / Q000032:analysis / Q000493:pharmacokinetics*; D013326:Strontium Radioisotopes / Q000032:analysis / Q000493:pharmacokinetics; D014018:Tissue Distribution
D002588:Cesium Radioisotopes; D011847:Radioactive Fallout; D011868:Radioisotopes; D013326:Strontium Radioisotopes