Behaviour of radiocaesium in coastal rivers of the Fukushima Prefecture (Japan) during conditions of low flow and low turbidity – Insight on the possible role of small particles and detrital organic compounds

Eyrolle-Boyer, Frédérique; Boyer, Patrick; Garcia‐Sanchez, L.; Métivier, Jean-Michel; Onda, Yuichi; Vismes, A. de; Cagnat, X.; Boulet, B.; Cossonnet, C.

doi:10.1016/j.jenvrad.2015.10.028

Cited by 37 publications

(12 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Radiocesium behavior in river water under base flow conditions was measured after the FDNPP accident in a wide area surrounding the site [ Nagao et al ., ; Sakaguchi et al ., ]. One characteristic of radiocesium in river water of Fukushima Prefecture is that the dissolved 137 Cs concentration (Bq/L) and 137 Cs in suspended solids (SS) (Bq/kg) have a strong relationship with the deposited 137 Cs inventory [ Eyrolle‐Boyer et al ., ; Ochiai et al ., ; Tsuji et al ., ]. In addition, Yoshimura et al .…”

Section: Introductionmentioning

confidence: 98%

Behavior of dissolved radiocesium in river water in a forested watershed in Fukushima Prefecture

et al. 2016

View full text Add to dashboard Cite

Dissolved radiocesium concentrations in river water in a high‐dose‐rate forest watershed in Fukushima Prefecture were investigated under base flow and storm flow conditions. Under base flow conditions, dissolved 137Cs concentrations in water (Bq/L) were relatively high in summer, and these levels were higher than particulate 137Cs concentrations (Bq/L). Under storm flow, particulate 137Cs concentration became dominant as the suspended solid concentration increased. Throughout the monitoring period, dissolved 137Cs concentrations in water (Bq/L) were higher under storm flow than base flow conditions and were positively correlated with runoff intensity. Factors influencing changes in dissolved 137Cs concentrations were investigated by measuring the 137Cs concentration of suspended solid (Bq/kg) and dissolved 137Cs of unsaturated soil water, throughfall, and rainfall, together with other main solute concentrations. The 137Cs concentration per unit weight of suspended solids in river water was not strongly correlated with runoff intensity. Additionally, dissolved 137Cs concentrations of soil water, groundwater, and rainfall were not detected, while higher dissolved 137Cs concentrations were detected in throughfall than river water. K+ concentrations were higher under storm flow than base flow, and dissolved organic carbon increased toward the peak flow rate. These findings suggested that one main factor influencing generation of dissolved 137Cs in the river water was leaching from organic material in flooded areas. However, further investigation is needed to clarify the dominant source of dissolved 137Cs in river water.

show abstract

Section: Introductionmentioning

confidence: 98%

Behavior of dissolved radiocesium in river water in a forested watershed in Fukushima Prefecture

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The dissolved 137 Cs concentration in river water in the Fukushima‐affected area ranged between 0.002 and 0.59 Bq l −1 (geometric mean 0.038 Bq l −1 ) in 2012–2013 (Eyrolle‐Boyer et al ., ). At 5 kBq kg −1 of 137 Cs in soils, the estimated realistic 137 Cs concentration in dissolved fractions of river water is 0.081 Bq l −1 (average) with the SE range 0.029–0.23 Bq l −1 (Methods S1) (Eyrolle‐Boyer et al ., ). By contrast, at 5 kBq kg −1 of 137 Cs in soils, the average soil solution 137 Cs concentration is 5.3 Bq l −1 (range 2.4–16 Bq l −1 ) (Methods S1).…”

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

“…For future predictions of the contribution of foliar RCs uptake by the stem base, RCs concentrations in irrigation water need to be monitored. It will also be useful to characterise how 137 Cs concentrations in river water (Eyrolle-Boyer et al, 2016) and in soil solutions (Takeda et al, 2013) will decrease over time. Table S1 Shoot 134 Cs concentration derived from the uptake by the stem base and from the root uptake by assuming the maximal leakage in Expt 2 Table S2 Scenario calculation of the relative contribution of foliar uptake of 137 Cs by rice plants to root uptake Methods S1 Prediction of the relative contribution of the stem base to root radiocaesium uptake.…”

Section: Discussionmentioning

confidence: 99%

“…The soil RCs concentrations at the intervention value of 5 kBq kg À1 (Yamaguchi et al, 2016) are most relevant because soils with RCs concentrations > 5 kBq kg À1 are currently not used for rice cultivation. The dissolved 137 Cs concentration in river water in the Fukushima-affected area ranged between 0.002 and 0.59 Bq l À1 (geometric mean 0.038 Bq l À1 ) in (Eyrolle-Boyer et al, 2016. At 5 kBq kg À1 of 137 Cs in soils, the estimated realistic 137 Cs concentration in dissolved fractions of river water is 0.081 Bq l À1 (average) with the SE range 0.029-0.23 Bq l À1 (Methods S1) (Eyrolle-Boyer et al, 2016).…”

Section: Potential Role Of the Stem Base Pathway To Rcs Uptake In Thementioning

confidence: 99%

See 2 more Smart Citations

Foliar uptake of radiocaesium from irrigation water by paddy rice (Oryza sativa): an overlooked pathway in contaminated environments

et al. 2017

View full text Add to dashboard Cite

Flooded (paddy) rice (Oryza sativa) can take up ions from the irrigation water by foliar uptake via the exposed stem base. We hypothesised that the stem base uptake of radiocaesium (RCs) is a pathway for rice grown in RCs-contaminated environments. We developed a bi-compartmental device which discriminates the stem base from root RCs uptake from solutions, thereby using RCs isotopes ( Cs and Cs) with< 2% solution leak between the compartments. Radiocaesium uptake was linear over time (0-24 h). Radiocaesium uptake to the entire plant, expressed per dry weight of the exposed parts, was sixfold higher for the roots than for the exposed stem base. At equal RCs concentrations in both compartments, the exposed stem base and root uptake contributed almost equally to the total shoot RCs concentrations. Reducing potassium supply to the roots not only increased the root RCs uptake but also increased RCs uptake by the stem base. This study was the first to experimentally demonstrate active and internally regulated RCs uptake by the stem base of rice. Scenario calculations for the Fukushima-affected area predict that RCs in irrigation water could be an important source of RCs in rice as indirectly suggested from field data.

show abstract

Difference in the Solid-Water Distributions of Radiocesium in Rivers in Fukushima and Chernobyl

Takahashi

Sakaguchi

Fan

et al. 2020

Behavior of Radionuclides in the Environment I

View full text Add to dashboard Cite

Behaviour of radiocaesium in coastal rivers of the Fukushima Prefecture (Japan) during conditions of low flow and low turbidity – Insight on the possible role of small particles and detrital organic compounds

Cited by 37 publications

References 48 publications

Behavior of dissolved radiocesium in river water in a forested watershed in Fukushima Prefecture

Behavior of dissolved radiocesium in river water in a forested watershed in Fukushima Prefecture

Foliar uptake of radiocaesium from irrigation water by paddy rice (Oryza sativa): an overlooked pathway in contaminated environments

Difference in the Solid-Water Distributions of Radiocesium in Rivers in Fukushima and Chernobyl

Contact Info

Product

Resources

About