ACCUMULATION AND DISTRIBUTION OF 137CS AND 40K IN SOIL, SEDIMENT AND MACROPHYTES OF THE NEMUNAS RIVER AND THE CURONIAN LAGOON SYSTEM

Olga Jefanova, Elena Danutė Marčiulionienė, Jonas Mažeika, Ričardas Paškauskas, Danguolė Montvydienė, Marija Volkova, Rimutė Stakėnienė, Mindaugas Kazbaris, Irma Lubienė, Ilona Minevičiūtė, Airida Mockute

Abstract


The aim of the study is to investigate the specific activity levels of 137Cs and 40K (a chemical analogue of 137Cs) in macrophytes, soiland sediment and to estimate the areal and vertical distribution of 137Cs in the sediment of the Nemunas River and Curonian Lagoonand in soil of water-meadows. An analysis of the surface soil layer data show that in one of the all investigated points can be identifieda barrier zone of 137Cs accumulations. Two barrier zones of 137Cs accumulations were revealing based on upper layer of bottomsediments data. Data from this study are important in the evaluation of 137Cs pollution levels in the Nemunas and the Curonian Lagoon;this is especially important if the project of NPP construction will be implemented near the Nemunas River in Kaliningradoblast.

KEY WORDS: the Nemunas, Curonian Lagoon, soil, bottom sediment, macrophytes, 137Cs, 40K.


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