Distribution and sources of (129)I in rivers of the Baltic region

Journal of Environmental Radioactivity
Ala AldahanGöran Possnert

Abstract

The concentration of (129)I was measured in 54 river waters discharging into the Baltic Sea from Sweden, Finland, Estonia, Latvia, Lithuania, Poland and Germany. Sample collection was performed during a well-bracketed time interval (June-July 1999), thus allowing comparison of the rivers over a wide latitude range without the effect of long temporal spread. Although there is no direct input of anthropogenic (129)I in the watersheds, the concentration of the isotope is about two to three orders of magnitude higher than the expected pre-nuclear era natural values in the rivers of Finland and northern Sweden, and in the rivers of southern Sweden, Lithuania, Estonia, Latvia, Poland and Germany; the (129)I concentration may reach five orders of magnitude higher. Furthermore, there are significant correlations between the (129)I concentration and latitude and/or distance from the North Sea and between (129)I and Cl. These findings suggest seawater as a main source of (129)I to the rivers through atmospheric transport. Of the many chemical parameters investigated, the pH may account for some of the variability in (129)I concentrations of the rivers. The contribution from nuclear weapon tests and the Chernobyl accident to the riverine ...Continue Reading

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Citations

Jan 31, 2012·The Science of the Total Environment·Jukka LehtoHarri Kankaanpää
Oct 29, 2011·The Science of the Total Environment·Violeta HansenGöran Possnert
Jul 9, 2011·The Science of the Total Environment·Luyuan ZhangYunchong Fu
Sep 30, 2008·Journal of Environmental Radioactivity·Qin-Hong HuJin-Sheng Wang
Sep 24, 2013·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·P YiB Wang
Sep 4, 2012·Journal of Environmental Radioactivity·J M Gómez-GuzmánM García-León
Jun 20, 2016·Journal of Environmental Radioactivity·A DaraouiC Walther
Dec 27, 2008·Analytica Chimica Acta·Xiaolin HouGalina Lujaniene

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