Effect of gleysation on remobilization of radionuclides in waterlogged soils

Legin, E. K.; Trifonov, Yurii I.; Khokhlov, M. L.; Legina, E. E.; Suglobov, D.N.; Strukov, V. N.; Legin, V.K.; Kuznetsov, Yurii V.

doi:10.1016/j.crci.2004.04.011

Cited by 5 publications

(2 citation statements)

References 5 publications

(4 reference statements)

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“…Thorium is a highly stable insoluble oxide and is primarily transported as suspended particulates; thus, the effects of weathering and diagenesis are very minor (Nesbitt, 1979). Experimental data have revealed that the rate of leached Th directly depends on the drainage activity of the soil (Legin et al, 2002(Legin et al, , 2004. We assumed that the high content of Th in the lake sediments was caused by high-intensity leaching of Th from the soil by surface water when the permafrost thawing rate was high.…”

Section: Interpretation Of the Elemental Compositionmentioning

confidence: 98%

A reconstruction of the thawing of the permafrost during the last 170years on the Taimyr Peninsula (East Siberia, Russia)

Fedotov

Phedorin

Enushchenko

et al. 2012

Global and Planetary Change

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Section: Interpretation Of the Elemental Compositionmentioning

confidence: 98%

A reconstruction of the thawing of the permafrost during the last 170years on the Taimyr Peninsula (East Siberia, Russia)

Fedotov

Phedorin

Enushchenko

et al. 2012

Global and Planetary Change

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“…Uranium is expected to be more mobile in soils than plutonium, particularly in acidic soils [10]. This difference is likely to give rise to differently shaped depth profiles ± 236 U concentration depth profiles should peak at a greater depth than those for plutonium.…”

Section: Uranium-236mentioning

confidence: 99%

Actinides, accelerators and erosion

Tims

Fifield

2012

EPJ Web of Conferences

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Abstract. Fallout isotopes can be used as artificial tracers of soil erosion and sediment accumulation. The most commonly used isotope to date has been 137 Cs. Concentrations of 137 Cs are, however, significantly lower in the Southern Hemisphere, and furthermore have now declined to 35% of original values due to radioactive decay. As a consequence the future utility of 137 Cs is limited in Australia, with many erosion applications becoming untenable within the next 20 years, and there is a need to replace it with another tracer. Plutonium could fill this role, and has the advantages that there were six times as many atoms of Pu as of 137 Cs in fallout, and any loss to decay has been negligible due to the long half-lives of the plutonium isotopes. Uranium-236 is another long-lived fallout isotope with significant potential for exploitation as a tracer of soil and sediment movement. Uranium is expected to be more mobile in soils than plutonium (or caesium), and hence the 236 U/Pu ratio will vary with soil depth, and so could provide an independent measure of the amount of soil loss. In this paper we discuss accelerator based ultra-sensitive measurements of plutonium and 236 U isotopes and their advantages over 137 Cs as tracers of soil erosion and sediment movement.

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