This paper reports the results of determinations of 137Cs and other radionuclides in bottom sediments and suspended matter collectedin a coastal zone of the northern Adriatic off the lagoon of Venice and at the estuary of the Adige River. The activity, behaviour and distribution of 137Cs and some natural radionuclides were determined in materials sampled up to 1984. Various artificial radionuclides (134Cs, 103Ru, 106Ru, together with 137Cs introduced by the accident Chernobyl) were detected samples collected in 1986. The study of the distribution of 137Cs as a function of sediment properties showed that this radionuclide preferentially accumulates in the finest particles (6-12 phi, i.e. 16-0.24 μm range) and is taken up by adsorpion surface processes. This radioisotope has been used as tracer for recent sedimentary processes occurring in the study area and also as a tracer for predicting the fate of other inorganic and organic pollutants reaching the sediments by natural process. Exceptionally high values of radioactivity were observed after the Chernobyl accident in the estuary of the Adige River, particularly in suspended matter. © 1987.

Distribution and behaviour of 137Cs in nearshore sediments of the northern Adriatic and at the Adige River estuary, northern Italy

MOLINAROLI, Emanuela;
1987-01-01

Abstract

This paper reports the results of determinations of 137Cs and other radionuclides in bottom sediments and suspended matter collectedin a coastal zone of the northern Adriatic off the lagoon of Venice and at the estuary of the Adige River. The activity, behaviour and distribution of 137Cs and some natural radionuclides were determined in materials sampled up to 1984. Various artificial radionuclides (134Cs, 103Ru, 106Ru, together with 137Cs introduced by the accident Chernobyl) were detected samples collected in 1986. The study of the distribution of 137Cs as a function of sediment properties showed that this radionuclide preferentially accumulates in the finest particles (6-12 phi, i.e. 16-0.24 μm range) and is taken up by adsorpion surface processes. This radioisotope has been used as tracer for recent sedimentary processes occurring in the study area and also as a tracer for predicting the fate of other inorganic and organic pollutants reaching the sediments by natural process. Exceptionally high values of radioactivity were observed after the Chernobyl accident in the estuary of the Adige River, particularly in suspended matter. © 1987.
1987
2
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10278/33071
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