Field measurements of key parameters associated with nocturnal OBT formation in vegetables grown under Canadian conditions

Kim, S.B.; Workman, W.G.; Korolevych, Volodymyr; Davis, Philip A.

doi:10.1016/j.jenvrad.2011.08.017

Cited by 15 publications

(4 citation statements)

References 13 publications

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“…Tritiated water molecules can be transferred by means of the hydrological cycle to all compartments. In plants and animals, tritium can then be metabolized into organically bound tritium (OBT) [ 15 , 16 , 17 ], which is potentially more hazardous than HTO due to its much longer biological half-life. On the other hand, the radiotoxicity of 3 H is rather low (the maximum energy of emitted beta-particles is only 18.6 keV), which is illustrated by international limits for drinking water, ranging from 100 to more than 70,000 Bq L −1 , depending on the country [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of the Fukushima Accident on 3H and 14C Environmental Levels: A Review of Ten Years of Investigation

2023

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The investigation of the impact of the Fukushima accident is still going on although more than ten years have passed since the disaster. The main goal of this paper was to summarize the results of tritium and radiocarbon determinations in different environmental samples, possibly connected with the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident. A document containing compiled data may serve as a solid basis for further research in the selected fields. To accomplish such effort, we went through dozens of relevant published papers, reporting 3H and 14C activity concentrations in precipitations, groundwater, seawater, river systems, tree rings, and, in some more extraordinary samples, such as herbaceous plants or debris from the damaged reactor buildings. As the referenced results would not be obtainable without adequate analytical techniques, the most common methods for routine measurement of tritium and radiocarbon concentrations are discussed as well. We believe that the correct identification of the affected environmental compartments could help quantify the released 3H and 14C activities and track their following fate, which could be especially important for plans to discharge contaminated water from the FDNPP in the upcoming years.

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Section: Introductionmentioning

confidence: 99%

Impact of the Fukushima Accident on 3H and 14C Environmental Levels: A Review of Ten Years of Investigation

2023

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“…Tritium can also become biologically incorporated and migrate in environmental systems by processes like photosynthesis, respiration, and transpiration in the place of Hparticularly when elevated levels of T are present. [2][3][4] Organic bound tritium (OBT) is found in different chemical forms in the environment, which in high levels, presents a health concern for humans and other biological life that live or consume food in these areas. These forms of OBT have been dened as exchangeable (E-OBT) and non-exchangeable OBT (NE-OBT).…”

Section: Introductionmentioning

confidence: 99%

Historical record of tritium from tree cores at the Savannah River Site

Pettitt

Duff

Vermeulen

2022

Environ. Sci.: Processes Impacts

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“…The existing studies mainly focus on the routine release and short atmospheric HTO exposure at daytime [4,[11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Little information is currently available regarding the tritium uptake and subsequent formation of organically bound tritium (OBT) in plants exposed to elevated levels of atmospheric tritium during the nighttime [24].…”

Section: Introductionmentioning

confidence: 99%

Tritium concentration in soybean plants exposed to atmospheric HTO during nighttime and daytime

Shen

Liu

2016

NUCL SCI TECH

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Potted soybean plants were exposed to evaporate HTO for 1 h inside an exposure box at two different growth stage (flowering and podding stage, filling stage) during nighttime and daytime. The concentration of tissuefree water tritium (TFWT) and organically bound tritium (OBT) in leaves and beans was measured at the end of the exposure. The results indicated that the quasi-equilibrium between the TFWT concentrations in the soybean leaves and the HTO concentration of the ambient air moisture required more than 1 h to be reached. The relative TFWT concentrations in the nighttime represent about 1/2 to 2/3 of the concentrations obtained in the day in the leaves compared to about 1/2 to 4/3 in the beans. The relative OBT concentrations under night conditions were about 2/5 to 1/2 of those under day conditions in the leaves, contrary to 1/2-7/10 for the beans. By developing tritium concentration assessment model with a short-term release of atmospheric HTO, we comprehensively considered the plant growth stage and the environmental conditions.

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Field measurements of key parameters associated with nocturnal OBT formation in vegetables grown under Canadian conditions

Cited by 15 publications

References 13 publications

Impact of the Fukushima Accident on 3H and 14C Environmental Levels: A Review of Ten Years of Investigation

Impact of the Fukushima Accident on 3H and 14C Environmental Levels: A Review of Ten Years of Investigation

Historical record of tritium from tree cores at the Savannah River Site

Tritium concentration in soybean plants exposed to atmospheric HTO during nighttime and daytime

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