Tritium dynamics in vegetables: Experimental results

Dinner, P.J.; Gorman, Dylan J; Spencer, Fitzgerald

doi:10.1016/0020-708x(80)90236-7

Cited by 7 publications

(3 citation statements)

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“…L'eau libre des feuilles se charge puis se décharge assez rapidement en tritium, avec une demi-vie biologique de l'ordre de quelques heures pendant la journée, lorsque les végétaux sont temporairement placés dans une atmosphère contenant de la vapeur d'eau tritiée (Kline et Stewart, 1974 ;Dinner et al, 1980 ;Guenot et Belot, 1984 ;Spencer, 1984 ;Choi et al, 2002 ;Davis et al, 2002). Ceci révèle une diffusion de l'eau de l'air vers l'eau contenue dans la plante, principalement à travers les stomates, malgré un flux d'eau essentiellement sortant.…”

Section: Transport Atmosphérique Et Dépôtunclassified

Apports de la surveillance du centre CEA-Valduc sur la connaissance des transferts de l’eau tritiée atmosphérique dans les différents compartiments de l’environnement

Goff

Boyer

2013

Radioprotection

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Section: Transport Atmosphérique Et Dépôtunclassified

Apports de la surveillance du centre CEA-Valduc sur la connaissance des transferts de l’eau tritiée atmosphérique dans les différents compartiments de l’environnement

Goff

Boyer

2013

Radioprotection

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“…where: C veg,OBT = concentration of OBT in 1 kg of fresh weight plant ID p = isotopic discrimination factor for plants (0.7); Table A4 M D = dry mass per kg fresh weight of plant material; Table A4 W eq = water equivalent of dry plant matter (L kg -1 ); Table A4 Concentrations of HTO in fruits, fruit vegetables and grain are calculated assuming 60% of the water in the fruit or fruit vegetable comes from air moisture and the other 40% comes from soil water (Davis 2003;Dinner et al 1980;Fellows et al 1990; Table A4).…”

Section: Concentrations Of Tfwt and Obt In Plantsmentioning

confidence: 99%

Historical Doses from Tritiated Water and Tritiated Hydrogen Gas Relesed to the Atmosphere from Lawrence Livermore National Laboratory (LLNL) Part 1. Description of Tritium Dose Model (DCART) for Chronic Releases from LLNL

Peterson¹

2004

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DCART (Doses from Chronic Atmospheric Releases of Tritium) is a spreadsheet model developed at Lawrence Livermore National Laboratory (LLNL) that calculates doses from inhalation of tritiated hydrogen gas (HT), inhalation and skin absorption of tritiated water (HTO), and ingestion of HTO and organically bound tritium (OBT) to adult, child (age 10), and infant (age 6 months to 1 year) from routine atmospheric releases of HT and HTO. DCART is a deterministic model that, when coupled to the risk assessment software Crystal Ball ® , predicts doses with a 95 th percentile confidence interval. The equations used by DCART are described and all distributions on parameter values are presented. DCART has been tested against the results of other models and several sets of observations in the Tritium Working Group of the International Atomic Energy Agency's Biosphere Modelling and Assessment Programme. The version of DCART described here has been modified to include parameter values and distributions specific to conditions at LLNL. In future work, DCART will be used to reconstruct dose to the hypothetical maximally exposed individual from annual routine releases of HTO and HT from all LLNL facilities and from the Sandia National Laboratory's Tritium Research Laboratory over the last fifty years.

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“…This isotopic discrimination results in a lower value for the specific activity (T/H -tritium atom/hydrogen atom) in the water of combustion compared with the specific activity in the plant water (McFarlane, 1976;Garland and Ameen, 1979). An isotopic discrimination factor of 0.7 has been chosen (Kim and Baumgärtner 1994 ); Table A4 The annual mean concentrations of HTO in fruits, fruit vegetables 5 and grain are calculated assuming 60% of the water in the fruit, fruit vegetable, or grain comes from air moisture and the other 40% comes from soil water (Davis 2003;Davis et al 2002;Dinner et al 1980;Fellows et al 1990; Table A4). …”

Section: Concentrations Of Tfwt and Obt In Plantsmentioning

confidence: 99%

Historical Doses from Tritiated Water and Tritiated Hydrogen Gas Released to the Atmosphere from Lawrence Livermore National Laboratory (LLNL) Part 1. Description of Tritium Dose Model (DCART) for Routine Releases from LLNL

Peterson¹

2006

View full text Add to dashboard Cite

DCART (Doses from Chronic Atmospheric Releases of Tritium) is a spreadsheet model developed at Lawrence Livermore National Laboratory (LLNL) that calculates doses from inhalation of tritiated hydrogen gas (HT), inhalation and skin absorption of tritiated water (HTO), and ingestion of HTO and organically bound tritium (OBT) to adult, child (age 10), and infant (age 6 months to 1 year) from routine atmospheric releases of HT and HTO. DCART is a deterministic model that, when coupled to the risk assessment software Crystal Ball ® , predicts doses with a 95% confidence interval. The equations used by DCART are described and all distributions on parameter values are presented. DCART has been tested against the results of other models and several sets of observations in the Tritium Working Groups of the International Atomic Energy Agency's programs, Biosphere Modelling and Assessment and Environmental Modeling for Radiation Safety. The version of DCART described here has been modified to include parameter values and distributions specific to conditions at LLNL. In future work, DCART will be used to reconstruct dose to the hypothetical maximally exposed individual from annual routine releases of HTO and HT from all LLNL facilities and from the Sandia National Laboratory's Tritium Research Laboratory over the last fifty years.iv This page intentionally left blank.v

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Tritium dynamics in vegetables: Experimental results

Cited by 7 publications

References 0 publications

Apports de la surveillance du centre CEA-Valduc sur la connaissance des transferts de l’eau tritiée atmosphérique dans les différents compartiments de l’environnement

Apports de la surveillance du centre CEA-Valduc sur la connaissance des transferts de l’eau tritiée atmosphérique dans les différents compartiments de l’environnement

Historical Doses from Tritiated Water and Tritiated Hydrogen Gas Relesed to the Atmosphere from Lawrence Livermore National Laboratory (LLNL) Part 1. Description of Tritium Dose Model (DCART) for Chronic Releases from LLNL

Historical Doses from Tritiated Water and Tritiated Hydrogen Gas Released to the Atmosphere from Lawrence Livermore National Laboratory (LLNL) Part 1. Description of Tritium Dose Model (DCART) for Routine Releases from LLNL

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