| Atmospheric deposition of cosmogenic 7Be and 137Cs from fallout of the Chernobyl accident. | |
| | |
MedLine Citation:
|
PMID: 7569877 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Atmospheric (tropospheric) depositional fluxes of the naturally occurring 7Be of cosmogenic origin and 137Cs from fallout of the Chernobyl accident were measured over a 7-year period (January 1987-December 1993) at Thessaloniki, Greece (40 degrees 38' N, 22 degrees 58' E). The annual total deposition fluxes of 7Be varied between 854 Bq/m2 (1987) and 1242 Bq/m2 (1992), showing a minimum in the years 1988-89. The annual total deposition fluxes of 137Cs varied between 183 Bq/m2 (1987) and 16.4 Bq/m2 (1992), showing a significant decrease as expected for natural removal and radioactive decay and no new releases from nuclear facilities or weapons testing. The annual average total deposition velocity for 7Be was from 0.3 cm/s (1988) up to 0.8 cm/s (1991), while for 137Cs the corresponding values were much higher, hence 137Cs was associated with larger atmospheric particles. High 7Be concentrations in air were related to the very little solar activity (1987-88 and 1993-94), while low 7Be concentrations in air related to the high solar activity (1989-91). Maximum 137Cs concentrations in air were registered during the spring 1991 and 1992, reflecting some stratospheric inputs. An unusual highly elevated value of 137Cs concentration in air, reaching 0.25 mBq/m3, was observed during the summer 1990. |
| | |
Authors:
|
C Papastefanou; A Ioannidou; S Stoulos; M Manolopoulou |
Related Documents
:
|
19212597 - Natural and anthropogenic radioactivity in the environment of mountain region of serbia. 21326337 - Autotrophic growth of nitrifying community in an agricultural soil. 8248767 - Effectiveness of countermeasures applied in belarus to produce milk and meat with accep... 18272267 - Radioactivity level and soil radon measurement of a volcanic area in cameroon. 1913347 - Biodegradation of pentachlorophenol in soil: the response to physical, chemical, and bi... 15042457 - Modifying the 'pulse-reserve' paradigm for deserts of north america: precipitation puls... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Science of the total environment Volume: 170 ISSN: 0048-9697 ISO Abbreviation: Sci. Total Environ. Publication Date: 1995 Aug |
Date Detail:
|
Created Date: 1995-10-24 Completed Date: 1995-10-24 Revised Date: 2008-11-21 |
Medline Journal Info:
|
Nlm Unique ID: 0330500 Medline TA: Sci Total Environ Country: NETHERLANDS |
Other Details:
|
Languages: eng Pagination: 151-6 Citation Subset: IM |
Affiliation:
|
Department of Nuclear Physics, Aristotle University of Thessaloniki, Greece. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Air Pollutants, Radioactive
/
analysis* Beryllium / analysis* Cesium Radioisotopes / analysis* Poaceae / chemistry Power Plants* Radioactive Hazard Release* Radioisotopes / analysis* Ukraine |
| Chemical | |
Reg. No./Substance:
|
0/Air Pollutants, Radioactive; 0/Cesium Radioisotopes; 0/Radioisotopes; 7440-41-7/Beryllium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Longevity and selenium deficiency: evidence from the People's Republic of China.
Next Document: Testing and classification methods for the biodegradabilities of organic compounds under anaerobic c...