Interception, retention and translocation under greenhouse conditions of radiocaesium and radiostrontium from a simulated accidental source

Vandecasteele, C.M.; Baker, S.J.; Förstel, H.; Muzinsky, M; Millán, Rocío; Madoz-Escande, C.; Tormos, J; Sauras, Teresa; Schulte, E.; Colle, C.

doi:10.1016/s0048-9697(01)00649-0

Cited by 37 publications

(42 citation statements)

References 21 publications

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“…1A and B). A similar relationship between f and above ground biomass was found by Vandecasteele et al (2001) for wheat, although their values for this crop were higher (0.84 for 134 Cs and 0.88 for 85 Sr). The relationship between the intercepted fraction of each radionuclide and the LAI in both years was also significant (Figs.…”

Section: Calculations Of Interception and Transfersupporting

confidence: 76%

“…Higher interception values for radiostrontium than for radiocaesium were also observed for spring wheat by Bengtsson et al (2012) and Vandecasteele et al (2001). Divalent ions, like 85 Sr, are expected to be more efficiently adsorbed on plant surfaces than monovalent ions, like 134 Cs (Aarkrog, 1969;Bréchignac et al, 2000;Vandecasteele et al, 2001). This effect might be more pronounced when sampling occurs shortly after deposition; as in this short time-lag, negligible amounts of radionuclides were washed-off.…”

Section: Calculations Of Interception and Transfermentioning

confidence: 91%

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Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover

Bengtsson¹,

Gärdenäs²,

Eriksson³

et al. 2014

Science of The Total Environment

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"NOTICE: this is the author's version of a work that was accepted for publication in . Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in SCIENCE OF THE TOTAL ENVIRONMENT, [VOL 497-498 (2014) AbstractThe aims of this study were to assess the potential radioactive contamination of fodder in the case of accidental radionuclide fallout, and to analyse the relationship between interception and retention of radionuclides as a function of biomass and Leaf Area Index (LAI). The interception and the retention of wet deposited 134 Cs and 85 Sr in ley (a mixture of grass and clover) were measured after artificial wet deposition in a field train in Uppsala (eastern central Sweden). The field trial had a randomised block design with three replicates. 134Cs and 85 Sr were deposited at six different growth stages during two growing seasons (20101 and 2011) using a rainfall simulator. The biomass was sampled in the centre of each parcel 2 to 3 h after deposition and at later growth stages (1 to 5) during the growing season. The above ground biomass and LAI were measured as well.The interception of radionuclides by the ley was largest at the late growth stages; the spike and tassel/flowering (code 5:6) in the 1 st year, and at flowering/initial flowering (code 6:5) in the 2 nd year. There was a correlation between radionuclide interception and above ground biomass, as well with LAI, for both radionuclides in both years. The highest activity concentrations of both radionuclides were measured after deposition at the late growth stages and were found to be higher in the 2 nd year. There weathering half-lives were shorter at the earlier growth stages than at the later growth stages for both radionuclides. For the magnitude of deposition chosen in our experiment, it can be concluded that the above ground biomass is a good predictor and the LAI a more uncertain predictor of the interception of radiocaesium and radiostrontium by ley grass and clover.

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Section: Calculations Of Interception and Transfersupporting

confidence: 76%

Section: Calculations Of Interception and Transfermentioning

confidence: 91%

Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover

Bengtsson¹,

Gärdenäs²,

Eriksson³

et al. 2014

Science of The Total Environment

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“…The rate of uptake and redistribution of radionuclides depends on growth stage of the crop, weather conditions and the type of radionuclide (IAEA, 2010;Kinnersley et al, 1997;Pröhl, 2009), and radionuclide uptake is through either foliage (foliar uptake) or roots (root uptake). Foliar uptake is assumed the dominant pathway when deposition occurs during the growing season (Pröhl, 2009); as a well-developed crop with its large leaf area intercepts a majority of the deposited radionuclides (Bengtsson et al, 2012;Vandecasteele et al, 2001). The cuticle layer of the leaf epidermis is assumed to be impermeable; however, it contains cracks and defects where radionuclides can enter (Handley and Babcock, 1972;Hossain and Ryu, 2009;Tukey et al, 1961).…”

Section: Introductionmentioning

confidence: 99%

Accumulation of wet-deposited radiocaesium and radiostrontium by spring oilseed rape (Brássica napus L.) and spring wheat (Tríticum aestívum L.)

Bengtsson¹,

Eriksson²,

Gärdenäs³

et al. 2013

Environmental Pollution

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Sr within different parts of spring oilseed rape and spring wheat plants was investigated, with a particular focus on transfer to seeds after artificial wet deposition at different growth stages during a two-year field trial. In general, the accumulation of radionuclides in plant parts increased when deposition was closer to harvest. The seed of spring oilseed rape had lower concentrations of 85 Sr than spring wheat grain. The plants accumulated more 134 Cs than 85 Sr. We conclude that radionuclides can be transferred into human food chain at all growing stages, especially at the later stages. The variation in transfer factors during the investigation, and in comparison to previous results, implies the estimation of the risks for possible transfer of radionuclides to seeds in the events of future fallout during a growing season is still subjected to considerable uncertainty..

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“…There is limited information on the direct uptake rate of radionuclides and as well the rate of intercepted radionuclides by plants, directly after the occurrence of wet deposition in a growing crop [3]. The level of interception by plant parts depends on climate conditions like precipitation, wind speed, physico-chemical form of the radionuclides, plant morphology and biomass density [3][4][5]. The proportion of precipitation that can be held by the plant canopy is quickly declining after that the maximum holding capacity of leaves have been reached, which is related to the amount and intensity of the precipitation as well as the plant morphology i.e.…”

Section: Introductionmentioning

confidence: 99%

“…After the maximum water retention capacity of the leaves is reached, the concentration of radioactive particles may continue to increase due to their physico-chemical properties, e.g. valence; the divalent radiostrontium ion is easily fixe to the surface of leaves [2,4]. The time between depositions and harvest also has an effect on the total uptake of radionuclides in plants.…”

Section: Introductionmentioning

confidence: 99%

Interception of wet deposited and transfers of radiocaesium and radiostrontium byBrássica napusL. andTríticum aestívumL.

et al. 2011

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Abstract. The aim of this study is to assess the interception and transfer to edible part of wet deposited 134 Cs and 85 Sr to spring oilseed rape and spring wheat and the dependency of the intercepted fraction on the development stage e.g. the total plant biomass. The radionuclides, 134 Cs and 85 Sr, were deposited at six different development stages using a rainfall simulator. The results showed that there was a positive correlation between the interception fraction for 134 Cs and 85 Sr and the biomass both for spring oilseed rape and spring wheat. The interception fraction and transfer factors were highest at growing stage of senescence (ripening) for both crops.

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Interception, retention and translocation under greenhouse conditions of radiocaesium and radiostrontium from a simulated accidental source

Cited by 37 publications

References 21 publications

Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover

Interception and retention of wet-deposited radiocaesium and radiostrontium on a ley mixture of grass and clover

Accumulation of wet-deposited radiocaesium and radiostrontium by spring oilseed rape (Brássica napus L.) and spring wheat (Tríticum aestívum L.)

Interception of wet deposited and transfers of radiocaesium and radiostrontium byBrássica napusL. andTríticum aestívumL.

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