Accumulation of radioactive elements by some groups of aquatic organisms

Il'in, D.I.; Moskalev, Iu I; Petrova, A. I.

doi:10.1007/bf01587537

Cited by 3 publications

(1 citation statement)

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“…It is probable that a portion of the 13 7 Cs in the sediment is diffusing into the water and becoming incorporated into the biotic component of the lake ecosystem. Several authors have referred to the rapid uptake of radionuclides by the biota of freshwater ecosystems, and the high concentration factors ( 000-25 000X) observed in the plankton (Il'in et al 1958;Pendleton & Hanson 1958;Agre & Korogodin 1960;Eyman & Kevern 1975). Rapid removal of 1 37 Cs from the water to the sediments has also been observed by Agre & Korogodin (1960) and 97-99% of the 1 37 Cs pool has been found associated with the bottom sediments (Pendleton & Hanson 1958;Eyman & Kevern 1975).…”

Section: Discussionmentioning

confidence: 99%

Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

1983

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Hidden Lake is a perched, brown-water lake located in the centre of Great Sandy Island (Fraser Is.), S.E. Queensland. It is highly acid (pH 4.0), oligotrophic and is thermally and chemically stratified for most of the year. The sediments revealed a 137Cs profile which departed from the temporal pattern of 37 Cs fallout in Brisbane and was represented by an exponential increase of 37 Cs towards the surface sediments from ca. 32 cm depth. The possible causes of the divergent profile are discussed, including physical and biological mixing, lag in the transport of catchment material to the sedimentary basin, diffusion, recycling and biological concentration. It is hypothesised that a combination of the last four processes, with diffusion facilitated by the highly acid conditions, are the major causes of the observed 37 Cs profile. Possible recycling and bioconcentration of 137Cs raises questions as to the validity of this method of dating in similar environmental conditions, and as to the interpretation of other palaeochemical data. These hypotheses are to be tested against profiles obtained from 4C, 2 1 0 pb, 2 3 9 / 2 4 0 Pu analyses of the sediment, and the measurement of 137Cs activity in the water and biota of the lake.

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Section: Discussionmentioning

confidence: 99%

Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

1983

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Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

Longmore¹,

O'Leary²,

Rose³

1983

Paleolimnology

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Analysis of the 1957-1958 Soviet Nuclear Accident

Trabalka

Eyman

Auerbach

1980

Science

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The presence of an extensive environmental contamination zone in Cheliabinsk Province of the Soviet Union, associated with an accident in the winter of 1957 to 1958 involving the atmospheric release of fission wastes, appears to have been confirmed, primarily by an analysis of the Soviet radioecology literature. The contamination zone is estimated to contain 10 5 to 10 6 curies of strontium-90 (reference radionuclide); a relatively small fraction of the total may have been dispersed as an aerosol. A plausible explanation for the incident is the use of now-obsolete techniques for waste storage and cesium-137 isotope separation. However, the source of the contamination was not unequivocally attributable to a single event, and its exact nature must await release of more information by the Soviet Union. Radioactive contamination appears to have resulted in resettlement of the human population from a significant area (100 to 1000 square kilometers). It therefore seems imperative to obtain a complete explanation of the cause (or causes) and consequences of the accident; Soviet experience gained in the application of corrective measures would be invaluable to the world nuclear community.

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Accumulation of radioactive elements by some groups of aquatic organisms

Cited by 3 publications

References 1 publication

Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

Caesium-137 profiles in the sediments of a partial-meromictic lake on Great Sandy Island (Fraser Island), Queensland, Australia

Analysis of the 1957-1958 Soviet Nuclear Accident

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