Document Detail

Radiocaesium activity concentrations in potatoes in Croatia after the Chernobyl accident and dose assessment.
MedLine Citation:
PMID:  17365336     Owner:  NLM     Status:  MEDLINE    
Systematic investigations of (137)Cs and (134)Cs activity concentrations in potatoes (Solanum tuberosum) for the post-Chernobyl period (1986-2005) in the Republic of Croatia are summarized. The correlation between (137)Cs activity concentrations in fallout and potatoes, has been found to be very good, the correlation coefficient being r = 0.88 with P(t) < 0.001 for 18 degrees of freedom. As the radiocaesium levels in potatoes decreased exponentially, the mean residence time of (137)Cs in potatoes was estimated by fitting the measured activity concentrations to the exponential curve. The mean residence time was found to be 6.8 +/- 1.1 years, the standard deviation being estimated by the Monte Carlo simulations. The initial observed (134)Cs:(137)Cs activity ratio in potatoes has been found to be quite variable, but slightly lesser than the theoretically predicted value of 0.5, calculated by applying the known inventory of these radionuclides in the Chernobyl reactor to the equation for the differential radioactive decay. This can be explained by presence of the pre-Chernobyl (137)Cs in soil that originated from nuclear fallout. The annual effective doses received by (134)Cs and (137)Cs intake due to consumption of potatoes estimated for an adult member of the Croatian population were found to be very small, as the per caput Dose for the entire 1986-2005 period was calculated to be about 2.9 microSv, (134)Cs accounting approximately for 1/3 of the entire dose. Therefore, after the Chernobyl accident consumption of potatoes was not the critical pathway for human intake of radiocaesium from the environment in Croatia.
Zdenko Franić; Branko Petrinec; Gordana Marović; Zrinka Franić
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes     Volume:  42     ISSN:  0360-1234     ISO Abbreviation:  J Environ Sci Health B     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-03-16     Completed Date:  2007-04-17     Revised Date:  2009-07-21    
Medline Journal Info:
Nlm Unique ID:  7607167     Medline TA:  J Environ Sci Health B     Country:  United States    
Other Details:
Languages:  eng     Pagination:  211-7     Citation Subset:  IM    
Radiation Protection Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia.
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MeSH Terms
Cesium Radioisotopes / analysis*
Chernobyl Nuclear Accident*
Dose-Response Relationship, Radiation
Environmental Pollution
Food Contamination, Radioactive / analysis*
Monte Carlo Method
Radioactive Fallout
Radioactive Hazard Release
Risk Assessment
Soil Pollutants, Radioactive / analysis*
Solanum tuberosum / chemistry*
Time Factors
Reg. No./Substance:
0/Cesium Radioisotopes; 0/Radioactive Fallout; 0/Soil Pollutants, Radioactive

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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