NDLI: Examining the Relationships Between the Activities of $^{3}$H in Precipitation and $^{137}$Cs in Ground-Level Air in Belgrade City Area

Content Provider	Springer Nature Link
Author	Janković, Marija M. Todorović, Dragana J.
Copyright Year	2012
Abstract	Specific activity of tritium ($^{3}$H) in precipitation and specific activity of $^{137}$Cs in ground-level air were monitored at three locations in Belgrade (Meteorological Station of Belgrade at Zeleno Brdo (ZB), Meteorological Station Usek (USEK), and Vinča Institute of Nuclear Sciences (VINS)). Data presented cover the period 1985–1997 for $^{137}$Cs for all locations and 1985–2009 (ZB), 1988–1997 (USEK), and 1988–2009 (VINS) for $^{3}$H. Concentrations of $^{3}$H in precipitation have been determined using electrolytic enrichment and liquid scintillation spectrometer LKB-Wallac 1219 RackBeta. The activity of $^{137}$Cs in air was determined on an HPGe detector (Canberra, relative efficiency 23 %). $^{3}$H concentrations in precipitation ranged from 0.40 ± 0.08 to 74.6 ± 5.2 Bq l$^{−1}$ decreasing with distance from the nuclear facilities. Significantly higher tritium levels were measured in samples in VINS compared with those from an off-site location. The observed seasonal variations of tritium concentration indicate the stratospheric source of tritium. Increases in activity concentration of $^{137}$Cs in the atmosphere were observed after the nuclear plant accident at Chernobyl in April 1986. The concentrations obtained for $^{137}$Cs in 1986 were compared with the integrated air concentrations of $^{137}$Cs in the region. The increases of $^{137}$Cs air concentrations in 1987 and 1988 were attributed to local resuspensions from the ground. Since 1989, the activity level before the accident has been obtained. The average monthly concentrations of $^{137}$Cs in ground-level air were shown spread maximum in spring–summer period and pronounced maximum during winter. The obtained results were statistically analyzed, i.e., the following parameters were determined: tritium deposition, monthly activities of $^{3}$H and $^{137}$Cs, seasonal indices, radionuclide loading indices, and linear correlation coefficients.
Starting Page	4471
Ending Page	4483
Page Count	13
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	223
Issue Number	7
e-ISSN	15732932
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-05-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	$^{3}$H Precipitation $^{137}$Cs Ground-level air Seasonal indices Radionuclide loading indices (RLI) Hydrogeology Environment Climate Change Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Soil Science & Conservation Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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