The process of self-purification of the Baltic Sea waters from artificial radionuclides

Styro, D. B.; Morkūnienė, Rasa; Vdovinskienė, Sonata

doi:10.1134/s0001437006030076

Cited by 5 publications

(9 citation statements)

References 4 publications

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“…During the period of observation in 1996-2005 ( Table 1) the extreme values of individual measurements were observed (41 and 212 Bq/m 3 ) [17]. This fact confirms a possibility of temporary formation of anomalous high 137 Cs VA in the SEPBS.…”

Section: Measurement Results and Their Analysissupporting

confidence: 53%

“…The method of radiochemical precipitation of radionuclide 137 Cs in seawater samples was used during this study as described in [17,19]. The procedure of ferrocyanide-carbonate precipitation was carried out.…”

Section: Measurement Methodsmentioning

confidence: 99%

“…The procedure of ferrocyanide-carbonate precipitation was carried out. Seawater samples were taken from 0,5 m depth in coastal waters to water tanks of 40-50 liters in volume [17,19]. The yield of 137 Cs was determined gravimetrically in the form of Cs 3 Sb 2 I 9 .…”

Section: Measurement Methodsmentioning

confidence: 99%

“…In 1986 a growth in the VA of artificial radionuclides was also observed [11], but the surface waters of the Baltic Sea were practically purified from these radionuclides within rather short periods [2]. The publications [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], etc present the distribution of the 137 Cs radionuclide VA after the accident at the ChPP.…”

Section: Introductionmentioning

confidence: 99%

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Comparison and Analysis of Investigation Results on Volumetric Activity of 137cs at the Baltic Sea Coast in 2003–2005

Styro

Morkūnienė

Astrauskiene

et al. 2007

Journal of Environmental Engineering and Landscape Management

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Measurements of 137Cs volumetric activity (VA) in coastal waters of the Baltic Sea (near Juodkrante) were carried out in 2005. The highest values occurred in springtime; later they decreased, and in the summer‐autumn period approximate homogeneous values of 137Cs varied in the range of 41–57 Bq/m3, and the lowest values were observed in autumn. Comparison of these values with analogous data obtained in 2003 and 2004 was carried out. The highest average annual value of 63 Bq/m3 is proved to be in 2004. Furthermore, that year the greatest 137Cs volumetric activity variations in the range of 49–91 Bq/m3 were observed. These variations are related to possible appearance of additional sources of radioactive contamination in the sea. Evidently, such sources did not exist in 2005, when a satisfactory coincidence of measured and calculated results was obtained.

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Section: Measurement Results and Their Analysissupporting

confidence: 53%

Section: Measurement Methodsmentioning

confidence: 99%

Section: Measurement Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison and Analysis of Investigation Results on Volumetric Activity of 137cs at the Baltic Sea Coast in 2003–2005

Styro

Morkūnienė

Astrauskiene

et al. 2007

Journal of Environmental Engineering and Landscape Management

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“…However, the results of accidental measurements in various parts of the Baltic Sea can be different. On the one hand it can be connected with a change of hydrometeorological situations, on the other hand -with an additional radioactive waste discharge [5]. Random measurement results of radionuclide 137 Cs VА have an accidental character; for example, it took place in 1998, 1999, 2002 [6].…”

Section: Introductionmentioning

confidence: 99%

Change Cyclicity of Volumetric Activity of Radionuclide 137cs in Coastal Waters of the Baltic Sea and Its Possible Reasons

Styra

Kleiza

Morkūnienė

et al. 2006

Journal of Environmental Engineering and Landscape Management

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Monitoring of the volumetric activity of a radionuclide 137Cs in the coastal waters of the Baltic Sea was carried out near the settlement of Juodkrante in the summer – autumn of 2004. Three measurement stages of the VA of this radionuclide were carried out and hydrometeorological situations were considered simultaneously. 137Cs VA change cyclicity was found out near the seacoast. Extreme data for the whole period of observation were 48 and 94 Bq/m3. Maximal values exceeded minimal data approximately two times, which practically coincided with the radioactive “background”. The method of mathematical modeling was used to find out possible reasons of 137Cs VA change near the sea‐coast. Because of lack of information about the location and power of a possible “source” of radioactive pollution, repeated calculations were carried out, assuming its various places of formation and various power, i e search of optimum coincidence of calculation and measurement data was selected. Optimum coincidence of theoretic and measurement results was found at the location of a radioactive “source” in the southern part of the Lithuanian sea area at a distance of 25–35 km from Juodkrante. The VA of the radioactive “source” was 5000 Bq/m3 in the summertime and 15000 Bq/m3 in October of 2004. Agreement of measurement and calculation results was satisfactory for all the observation stages.

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Radioactivity in the Baltic Sea: inventories and temporal trends of 137Cs and 90Sr in water and sediments

Ikäheimonen

Outola

Vartti

et al. 2009

J Radioanal Nucl Chem

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The process of self-purification of the Baltic Sea waters from artificial radionuclides

Cited by 5 publications

References 4 publications

Comparison and Analysis of Investigation Results on Volumetric Activity of 137cs at the Baltic Sea Coast in 2003–2005

Comparison and Analysis of Investigation Results on Volumetric Activity of 137cs at the Baltic Sea Coast in 2003–2005

Change Cyclicity of Volumetric Activity of Radionuclide 137cs in Coastal Waters of the Baltic Sea and Its Possible Reasons

Radioactivity in the Baltic Sea: inventories and temporal trends of 137Cs and 90Sr in water and sediments

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