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

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 creat...

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Bibliographic Details
Published in:	Journal of environmental radioactivity Vol. 56; no. 3; pp. 285 - 298
Main Authors:	Kashparov, V.A, Lundin, S.M, Khomutinin, Yu.V, Kaminsky, S.P, Levchuk, S.E, Protsak, V.P, Kadygrib, A.M, Zvarich, S.I, Yoschenko, V.I, Tschiersch, J
Format:	Journal Article
Language:	English
Published:	Oxford Elsevier Ltd 2001 Elsevier
Subjects:	30 km exclusion zone 90Sr Agriculture Applied sciences Chernobyl Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Environmental Monitoring Exact sciences and technology Nuclear Reactors Plants - chemistry Pollution Pollution sources. Measurement results Pollution, environment geology Radioactive Fallout - analysis Radioactive Hazard Release Radioactive Waste Soil and sediments pollution Soil contamination Soil Pollutants, Radioactive - analysis Strontium Radioisotopes - analysis Ukraine Eastern Europe Europe Ukraine Chernobyl 30 km exclusion zone 90Sr Map Soil contamination Cartography Radioactive pollution Sample size Fission reactor accidents Strontium 90 Property of soil Radioisotope Sampling Soil pollution Spatial variation Radioactivity measurement Nuclear reactor
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Summary:	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.
ISSN:	0265-931X 1879-1700
DOI:	10.1016/S0265-931X(00)00207-1