137Cs, 40K, 238Pu, 239+240Pu and 90Sr in biological samples from King George Island (Southern Shetlands) in Antarctica

Mietelski, Jerzy W.; Olech, Maria; Katarzyna, Sobiech-Matura; Howard, B.J.; Gaca, P.; Zwolak, M.; Błażej, Sylwia; Tomankiewicz, E.

doi:10.1007/s00300-008-0449-5

Cited by 24 publications

(18 citation statements)

References 16 publications

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“…All results for 238 Pu are below the detection limits in the latter sample group. These results obtained are comparable to the Antarctic radionuclides data published so far [2, 5, 18–20]. …”

Section: Resultssupporting

confidence: 91%

“…Some research has been conducted on radioactivity in Antarctica [1–7] which has pointed out that global fallout with significant input of 238 Pu from the “SPAP-9A” accident is a source of Antarctic radioactive contamination. There were suggestions that there is a difference between marine and terrestrial samples in 238 Pu/ 239+240 Pu activity ratios [5]. It was not investigated further in the past because of sparse data.…”

Section: Introductionmentioning

confidence: 99%

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Variations of plutonium isotopic ratios in Antarctic ecosystems

Szufa

Mietelski

Anczkiewicz

et al. 2018

J Radioanal Nucl Chem

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The aim of the article was to verify the hypothesis concerning the diversification of plutonium sources in the natural environment of Antarctica. Plutonium activity and atom ratios were analyzed in two groups of biological samples: terrestrial and marine. Both isotopic ratios in the terrestrial set were consistent with global radioactive fallout ratios. The average activity ratio in the marine ecosystem was lower than global radioactive fallout. At the same time mass ratio values in this group turned out to be surprisingly varied. Analysis of the results showed statistically significant differences between the marine and terrestrial ecosystems.Electronic supplementary materialThe online version of this article (10.1007/s10967-018-6274-6) contains supplementary material, which is available to authorized users.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Variations of plutonium isotopic ratios in Antarctic ecosystems

Szufa

Mietelski

Anczkiewicz

et al. 2018

J Radioanal Nucl Chem

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“…For example, under some conditions, the deposited Cs-137 and Pb-210 are accumulated in plants. They may also re-enrich the atmospheric aerosol through dust lifted from the soil, and can migrate over long distances, reaching even Arctic regions [1][2][3][4]. The only gaseous element in decay series, Rn-222, shows other mechanisms of translocation.…”

Section: Introductionmentioning

confidence: 99%

The Use of Moss Pleurozium schreberi (Brid.) Mitt. as Bioindicator of Radionuclide Contamination in Industrial Areas of Upper Silesia

Kosior

Dołhańczuk-Śródka

Ziembik

2017

Ecological Chemistry and Engineering S

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Abstract:Mosses are good bioaccumulators of radionuclides and from the 60 of the last century, they are used as bioindicators of radioactive contamination in the environment. Concentration of impurities in moss represent the accumulation in mosses during the past 2-3 years. As a result, the moss composition analysis provides information on an average contamination within a few vegetation seasons. During our survey the measurements of radionuclide activity concentrations in P. schreberi transplanted from places relatively clean to heavily contaminated areas of Upper Silesia were carried out. An increase in the radionuclides activity concentrations in P. schreberi transplants may indicate not only deposition of the radionuclides itself, but also an influx of other pollutants. The results showed no relationship between the Pb-210 activity concentration and activity concentrations of Pb-214, Bi-214, also belonging to the uranium-radium decay series. The increased concentration of Pb-210 in P. schreberi may be the result of the radionuclide atmospheric deposition, which appears in the environment as a result of fossil fuels burning. Excess, allogeneic Pb-210 can be used as marker of environmental pollution. In the areas with its higher activity concentration increased pollution can be expected delivered, for example, by local industry. The Project received financial assistance from the funds of the National Science Centre, granted by force of the decision no. UMO-2013/09/B/NZ8/03340 (NCN).

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“…MB4 with a larger catchment but farther away from the glacial front, however, has a lower deposition rate, which in turn resulted in lower 210 Pb ex and 137 Cs flux, not to mention MB6 and CC with even smaller catchment sizes and deposition rate. Since the chemical activity and mobility of Cs were much higher than Pb, its downward movement was more significant, resulting in a more drastic decrease from profiles with high to low deposition rates (Ivanovich and Harmon, 1992;Mietelski et al, 2008). Apart from the different fluxes among profiles, high 210 Pb ex and 137 Cs flux in the site closest to the glacial front may also indicate an increased input of melt water caused by continuous warming over the recent century (Appleby et al, 1995;Gulin and Stokozov, 2005;Sanders et al, 2010).…”

Section: Environmental Implications Of Radionuclide Flux In the Ross mentioning

confidence: 95%

Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica

Nie

Liu

et al. 2016

Science of The Total Environment

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Radionuclides including (210)Pb, (226)Ra and (137)Cs were analyzed in eight ornithogenic sediment profiles from McMurdo Sound, Ross Sea region, East Antarctica. Equilibration between (210)Pb and (226)Ra were reached in all eight profiles, enabling the determination of chronology within the past two centuries through the Constant Rate of Supply (CRS) model. Calculated fluxes of both (210)Pb and (137)Cs varied drastically among four of the profiles (MB4, MB6, CC and CL2), probably due to differences in their sedimentary environments. In addition, we found the flux data exhibiting a clear decreasing gradient in accordance with their average deposition rate, which was in turn related to the specific location of the profiles. We believe this phenomenon may correspond to global warming of the last century, since warming-induced surface runoff would bring more inflow water and detritus to the coring sites, thus enhancing the difference among the profiles. To verify this hypothesis, the deposition rate against age of the sediments was calculated based on their determined chronology, which showed ascending trends in all four profiles. The significant increase in deposition rates over the last century is probably attributable to recent warming, implying a potential utilization of radionuclides as environmental indicators in this region.

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137Cs, 40K, 238Pu, 239+240Pu and 90Sr in biological samples from King George Island (Southern Shetlands) in Antarctica

Cited by 24 publications

References 16 publications

Variations of plutonium isotopic ratios in Antarctic ecosystems

Variations of plutonium isotopic ratios in Antarctic ecosystems

The Use of Moss Pleurozium schreberi (Brid.) Mitt. as Bioindicator of Radionuclide Contamination in Industrial Areas of Upper Silesia

Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica

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