Abstract
To obtain information on the spatial variability of fallout 137Cs in the soil of a small area, the activity concentration of this radionuclide was determined in 100 soil samples, taken along the two diagonals of a cultivated field (150×100 m). The results show that the spatial distribution of 137Cs in this field is at random. The frequency distribution of the values is skewed to the right, but not log-normal. The median activity concentration observed was 7.45 Bq kg-1 dry soil, the values ranging from 4.8–15 Bq kg-1. The spatial variability, as characterized by the relative decile deviation was 26%. If one tolerates for the establishment of baselines of global fallout 137Cs in the soil an error in the mean activity concentration of 10% (20%) at the 95% confidence level, the minimum number of soil samples to be taken can be estimated as 14 (4). The total deposition of 137Cs on the soil surface by fallout was determined as 3.3±0.4 kBq m-2.
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References
ACS Committee on Environmental Improvement: 1980, ‘Guidelines for Data Acquisition and Data Evaluation in Environmental Chemistry’, Anal. Chem. 52, 2242–2249.
Ames, L. L. and Rai, D.: 1978, ‘Radionuclide Interactions with Soil and Rock Media’, Vol. 1, EPA 520/6-78-007-A, U. S. Environmental Protection Agency.
Bachhuber, H., Bunzl, K., Schimmack, W., and Gans, I.: 1982, ‘The Migration of 137Cs and 90Sr in Multilayered Soils: Results from Batch, Column and Fallout Investigations’, Nucl. Technology 59, 291–301.
Bunzl, K., Bachhuber, H., and Schimmack, W.: 1984, ‘Distribution Coefficients of 137Cs, 85Sr, 141Ce, 103Ru, 131I and 95mTc in the Various Horizons of Cultivated Soils in Germany’, in Udluft, P., Merkel, B., and Prösl, K. (eds.), Proc. Int. Symp. on Recent Investigations in the Zone of Aeration, p. 567–577. Dept. of Hydrogeology and Hydrochemistry, Technical University, Munich, F.R.G.
Frissel, M. J., Jakubik, A. T., Van derKlugt, N., Penders, R., Poelstera, P., and Zwemmer, E.: 1981, ‘Modeling of the Transport and Accumulation of Radionuclides of Strontium, Cesium and Plutonium in Soil. Experimental Verification’, European Applied Research Reports, Commission of European Communities, Luxembourg.
Grundler, W., Keilmann, F., Putterlik, V., Santo, L., Strube, D., and Zimmermann, I.: 1983, ‘Nonthermal Resonant Effects of 42 GHz Microwaves on the Growth of Yeast Cultures’, in Fröhlich, H. and Kremer, F. (eds.), Coherent Excitations in Biological Systems, pp. 21–37, Springer Verlag, Berlin.
Johnson, L. J.: 1979, ‘Nuclear Waste Management Technology’, Health Phys. 36, 535.
Mc Bratney, A. B. and Webster, R.: 1983, ‘How Many Observations are Needed for Regional Estimation of Soil Properties’, Soil Sci. 135, 177–183.
Nyhan, J. W., White, G. C., Schofield, T. G., and Trujillo, G.: 1983, ‘An Evaluation of Soil Sampling For 137Cs Using Various Field-Sampling Volumes’, Health Phys. 44, 541–552.
Sachs, L.: 1976, Angewandte Statistik, Springer Verlag, Berlin.
Schimmack, W. and Bunzl, K.: 1986, ‘Migration of Radionuclides in a Cultivated Soil: Effect of Ploughing’, Geoderma, in print.
UNSCEAR: 1982, Ionizing Radiation: Sources and Biological Effects, United nations Scientific Committee on the Effects of Atomic Radiation: Report to the General Assembly, United Nations, New York.
White, G. C. and Hakonson, E.: 1979, ‘Statistical Considerations and Survey of Plutonium Concentration Variability in Some Terrestrial Ecosystem Components’, J. Environ. Qual. 8, 176–182.
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Bachhuber, H., Bunzl, K. & Schimmack, W. Spatial variability of fallout-137Cs in the soil of a cultivated field. Environ Monit Assess 8, 93–101 (1987). https://doi.org/10.1007/BF00396609
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DOI: https://doi.org/10.1007/BF00396609