Paddy-field contamination with 134Cs and 137Cs due to Fukushima Dai-ichi Nuclear Power Plant accident and soil-to-rice transfer coefficients

Endo, Satoru; Kajimoto, Tetsuya; Shizuma, Kiyoshi

doi:10.1016/j.jenvrad.2012.08.018

Cited by 63 publications

(36 citation statements)

References 7 publications

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“…RCs concs. in roots were found to be higher than that in shoots of rice grown in paddy fields (Endo et al, 2013), whereas the differences in RCs concs. between organs were small in cabbage and barley, and RCs concs.…”

Section: Radiocesium Activity Concentrations In Plantsmentioning

confidence: 65%

“…were assumed to be almost the same. Although previous studies (Endo et al, 2013;Terashima et al, 2014) also indicated that the majority of radiocesium was present within 15 cm of the surface after the 2011 fallout, they did not measure exchangeable and fixed-radiocesium fractions. If the ratio of exchangeable to total radiocesium was variable, a reliable estimation of the transfer coefficient between soil and plants using the total RCs conc.…”

Section: Radiocesium Activity Concentrations In the Soilmentioning

confidence: 89%

“…Moreover, studies on the radiocesium contamination of crops cultivated in fields near the nuclear power plant after the accident were mainly performed in rice. These studies focused on soil-to-rice transfer coefficients (Endo et al, 2013); the effects of applying potassium, zeolite, and vermiculite on radiocesium uptake (Fujimura et al, 2013) and the uptake and translocation of radiocesium (Kondo et al, 2015;Nobori et al, 2014).…”

Section: Cs Andmentioning

confidence: 99%

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Radiocesium Distribution in Soil and <i>Brassica napus</i> Grown in Contaminated Soils

Kanayama

Omura

Goryo³

et al. 2018

Hortic J

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Brassica napus was cultivated in three test fields exposed to different radionuclide contamination levels 1.5 years after the Fukushima Daiichi nuclear power plant accident to investigate the correlation between soil contamination and radiocesium activity concentration (RCs conc.) in plants. The correlations between total and exchangeable RCs conc. were strong in the plow layer (L1) and the layer 5 cm below L1 (L2). Watersoluble radiocesium was not detected in either layer, and little radiocesium penetration was observed below L2. Correlation coefficients between RCs conc. in each plant organ and soil layers were calculated. Correlations between RCs conc. in each vegetative organ and total and exchangeable RCs conc. in L1 and correlations between vegetative organs were mostly strong during vegetative growth and flowering periods. Correlations between RCs conc. in flowers with that in L1, L2, and other vegetative organs were not significant. RCs conc. in L1 may more directly affect concentrations in roots and shoots. RCs conc. in oil extracted from seeds was measured, and the results suggested that radiocesium was not detectable in the oil fraction. Our data regarding radiocesium in soil and plants and their correlations obtained by extensive cultivation in contaminated soils could be useful to gain a better scientific understanding of radiocesium transport and accumulation and to provide useful information for the future utilization of areas with low contamination levels.

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Section: Radiocesium Activity Concentrations In Plantsmentioning

confidence: 65%

Section: Radiocesium Activity Concentrations In the Soilmentioning

confidence: 89%

Section: Cs Andmentioning

confidence: 99%

See 1 more Smart Citation

Radiocesium Distribution in Soil and <i>Brassica napus</i> Grown in Contaminated Soils

Kanayama

Omura

Goryo³

et al. 2018

Hortic J

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“…Such radioactive materials have spread over an extensive area 2,3) . In Fukushima prefecture, restoration works have still continued at many radioactively-contaminated places and then radioactivity inspection has been carried out not only for drinking-water and food crops but also for various surrounding materials such as soil, grass and others 4,5) . For the purpose of easy check of radioactivity of such samples, a NaI(Tl) scintillation spectrometry system is often used because it is a good match for voluminous sample.…”

Section: Introductionmentioning

confidence: 99%

Development of Faced-Type Double NaI(Tl) Scintillation Detector System for Measurement of Radioactive-Cesium Concentration

Yano

Zushi

Sato

et al. 2015

Radiat. Saf. Manage.

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A low-cost and high-performance gamma-ray spectrometer has been successfully constructed by using 3≤f × × 3≤ NaI(Tl) scintillation probes, standard lead bricks and others for the measurement of radioactive-cesium concentration of various surrounding materials. A faced double detector system with signal mixing has been employed for the improvement of total-absorption detection efficiency for radioactive-cesium. Uniquely-shaped containers covering the double detectors have been made of acrylic pipes and plates. The total-absorption detection efficiency for radioactive-cesium in the homemade container was experimentally determined by using a standard voluminous source made of soil in Fukushima. The detection efficiency determined from the experiments almost agreed results from Monte Carlo calculations with the PHITS code. It was confirmed from radioactivecesium measurement on fly ash that the subtraction of energy spectral data of background radiations was useful for low-level radioactive-cesium measurement.

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“…After the Fukushima nuclear accident, many field investigations have been conducted to assess the transfer of radioactive Cs to some plants species such as rice (Endo et al 2013;Ohmori et al 2014). Some other studies tried to find plants that accumulate high amounts of radiocesium Mimura et al 2014;Tanaka et al 2013;Yoshihara et al 2013), thus far, no hyperaccumulator plant has been found.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the possibility to use the plant–microbe interaction to stimulate radioactive 137Cs accumulation by plants in a contaminated farm field in Fukushima, Japan

et al. 2014

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Field experiments in a contaminated farmland in Nihonmatsu city, Fukushima were conducted to assess the effectiveness of the plant-microbe interaction on removal of radiocesium. Before plowing, 93.3% of radiocesium was found in the top 5 cm layer (5,718 Bq kg DW(-1)). After plowing, Cs radioactivity in the 0-15 cm layer ranged from 2,037 to 3,277 Bq kg DW(-1). Based on sequential extraction, the percentage of available radiocesium (water soluble + exchangeable) was fewer than 10% of the total radioactive Cs. The transfer of (137)Cs was investigated in three agricultural crops; komatsuna (four cultivars), Indian mustard and buckwheat, inoculated with a Bacillus or an Azospirillum strains. Except for komatsuna Nikko and Indian mustard, inoculation with both strains resulted in an increase of biomass production by the tested plants. The highest (137)Cs radioactivity concentration in above-ground parts was found in Bacillus-inoculated komatsuna Nikko (121 Bq kg DW(-1)), accompanied with the highest (137)Cs TF (0.092). Furthermore, komatsuna Nikko-Bacillus and Indian mustard-Azospirillum associations gave the highest (137)Cs removal, 131.5 and 113.8 Bq m(-2), respectively. Despite the beneficial effect of inoculation, concentrations of (137)Cs and its transfer to the tested plants were not very high; consequently, removal of (137)Cs from soil would be very slow.

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Paddy-field contamination with 134Cs and 137Cs due to Fukushima Dai-ichi Nuclear Power Plant accident and soil-to-rice transfer coefficients

Cited by 63 publications

References 7 publications

Radiocesium Distribution in Soil and <i>Brassica napus</i> Grown in Contaminated Soils

Radiocesium Distribution in Soil and <i>Brassica napus</i> Grown in Contaminated Soils

Development of Faced-Type Double NaI(Tl) Scintillation Detector System for Measurement of Radioactive-Cesium Concentration

Evaluation of the possibility to use the plant–microbe interaction to stimulate radioactive 137Cs accumulation by plants in a contaminated farm field in Fukushima, Japan

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