|Artificial and natural radionuclides in spruce needles in Upper Austria from 1983 to 2008 - an application for radioecological monitoring|
The spatial and temporal distribution of activity concentrations in spruce needles were comprehensively analysed and illustrated. Further on, the relation between natural and artificial radionuclides in spruce needles was determined. To estimate the long-term behaviour of 137Cs, ecological half-lives were calculated for the compartment spruce needles. Additionally, soil samples were taken at selected sites and analysed radiometrically to determine the radionuclide inventory in soil and to study the soil-to-plant transfer. Based on these results, detection limits for additional deposits were calculated to pursue the question, whether it is possible to use the bioindicator spruce needle for environmental radioactivity monitoring.
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