Plutonium isotopes in surface air of Prague in 1986-2006
Language English Country Great Britain, England Media print-electronic
Document type Historical Article, Journal Article
PubMed
18597907
DOI
10.1016/j.jenvrad.2008.05.001
PII: S0265-931X(08)00082-9
Knihovny.cz E-resources
- MeSH
- Chernobyl Nuclear Accident MeSH
- History, 20th Century MeSH
- History, 21st Century MeSH
- Plutonium analysis MeSH
- Air Movements MeSH
- Air Pollutants, Radioactive analysis history MeSH
- Seasons MeSH
- Check Tag
- History, 20th Century MeSH
- History, 21st Century MeSH
- Publication type
- Journal Article MeSH
- Historical Article MeSH
- Geographicals
- Czech Republic MeSH
- Names of Substances
- Plutonium MeSH
- Air Pollutants, Radioactive MeSH
Monitoring of 239,240Pu in surface air of Prague started in 1986 in connection with the Chernobyl accident. Measurable activities of 10-28 microBq m(-3) were found from 29 April 1986 to 5 May 1986. In the most of the monitoring periods of 1987-1996, activities of 239,240Pu in air were not measurable. Positive values for 239,240Pu and 238Pu in air could be obtained after installation of an aerosol sampler with higher flow-rate in 1997. Activity concentrations of 239,240Pu and 238Pu in Prague air in the most of quarters of 1997-2006 were in the range 0.53-5.06 and <0.16-1.10 nBq m(-3), respectively. Seasonal fluctuations can be found in content of 239,240Pu in air. Activity ratios of 238Pu/239,240Pu in air are higher than those in top soil, so it can be supposed that 238Pu is coming to air of Prague also from other sources than resuspension of fallout from atmospheric nuclear tests.
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