Soil contamination with 90Sr in the near zone of the Chernobyl accident

Title: Soil contamination with 90Sr in the near zone of the Chernobyl accident

Author: V.A Kashparov, S.M Lundin, Yu.V Khomutinin, S.P Kaminsky, S.E Levchuk, V.P Protsak, A.M Kadygrib, S.I Zvarich, V.I Yoschenko, J Tschiersch

Reference: Journal of Environmental Radioactivity, Volume 56, Issue 3, 2001, Pages 285-298

DOI: http://dx.doi.org/10.1016/S0265-931X(00)00207-1

Keywords: Soil contamination; ⁹⁰Sr; Chernobyl; 30 km exclusion zone; Map

Abstract: Representative large-scale soil sampling on a regular grid of step width about 1 km was carried out for the first time in the near zone of the Chernobyl accident (radius 36 km). An integrated map of terrestrial ⁹⁰Sr contamination density in the 30 km exclusion zone (scale 1 : 200,000) has been created from the analysed samples. Maps of the main agrochemical characteristics of the soils, which determine the fuel particle dissolution rates and the contamination of vegetation, were produced. The total contents of ⁹⁰Sr on the ground surface of the 30 km zone in Ukraine (without the reactor site and the radioactive waste storages) was about 810 TBq (8.1×10⁺¹⁴ Bq) in 1997, which corresponds to 0.4–0.5% of the Chernobyl reactor inventory at the time of the accident. This assessment is 3–4 times lower than previous estimates.

URL: http://www.sciencedirect.com/science/article/pii/S0265931X00002071

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