Modelling tritium flux from water to atmosphere: application to the Loire River

Marang, Laura; Siclet, F.; Lück, M.; Maro, D.; Tenailleau, L.; Jean‐Baptiste, Philippe; Fourré, Élise; Fontugne, M.

doi:10.1016/j.jenvrad.2010.11.015

Cited by 15 publications

(3 citation statements)

References 14 publications

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“…The layer-based visualizations of the spatial distribution of HTO were achieved by ArcMap v.10.8. Moreover, combining the recorded ventilation rates and investigated HTO data, the indoor HTO release rate was estimated by the mass balance model, and the value was then compared with the theoretical HTO evaporation rate from the pool port. − The details and used parameters (Table S1) are given in part 5 of the SI.…”

Section: Methodsmentioning

confidence: 99%

Development of a Novel Passive Monitoring Technique to Showcase the 3D Distribution of Tritiated Water (HTO) Vapor in Indoor Air of a Nuclear Facility

Feng,

Ibesich,

Hainz

et al. 2023

Environ. Sci. Technol.

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Tritiated water (HTO), a ubiquitous byproduct of the nuclear industry, is a radioactive contaminant of major concern for environmental authorities. Although understanding spatiotemporal heterogeneity of airborne HTO vapor holds great importance for radiological safety as well as diagnosing a reactor's status, comprehensive HTO distribution dynamics inside nuclear facilities has not been studied routinely yet due to a lack of appropriate monitoring techniques. For current systems, it is difficult to simultaneously achieve high representativeness, sensitivity, and spatial resolution. Here, we developed a passive monitoring scheme, including a newly designed passive sampler and a tailored analytical protocol for the first comprehensive 3D distribution characterization of HTO inside a nuclear reactor facility. The technique enables linear sampling in any environment at a one-day resolution and simultaneous preparation of hundreds of samples within 1 day. Validation experiments confirmed the method's good metrological properties and sensitivity to the HTO's spatial dynamics. The air in TU Wien's reactor hall exhibits a range of 3 H concentrations from 75−946 mBq m −3 in the entire 3D matrix. The HTO release rate estimated by the mass-balance model (3199 ± 306 Bq h −1 ) matches the theoretical calculation (2947 ± 254 Bq h −1 ), suggesting evaporation as the dominant HTO source in the hall. The proposed method provides reliable and quality-controlled 3D monitoring at low cost, which can be adopted not only for HTO and may also inspire monitoring schemes of other indoor pollutants.

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Section: Methodsmentioning

confidence: 99%

Development of a Novel Passive Monitoring Technique to Showcase the 3D Distribution of Tritiated Water (HTO) Vapor in Indoor Air of a Nuclear Facility

Feng,

Ibesich,

Hainz

et al. 2023

Environ. Sci. Technol.

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“…All sites were sampled during these campaigns, except V2 (upstream Civaux) that was sampled only in July and October 2013 and upstream sites of the Loire and tributaries (L1, A1, Ma1, S1, and Lo1) that were sampled in March 2014. We also used unpublished data from three other campaigns conducted in September 2004, May 2005, and November 2005 in which the sampling sites were located in the middle Loire River and the samples were collected on the riverbank (Fontugne et al 2007; Marang et al 2011).…”

Section: Study Areamentioning

confidence: 99%

Temporal and Spatial Variations of Freshwater Reservoir Ages in the Loire River Watershed

Coularis

Tisnérat‐Laborde

Pastor³

et al. 2016

Radiocarbon

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In order to map the freshwater reservoir effect (FRE) variability of the Loire River and its tributaries, spatial and temporal carbon isotope (13C and 14C) analyses of the dissolved inorganic carbon (DIC) were conducted. Sites were selected to represent the diversity of geological settings, soil type, and land use. Results show a large spatial variability of 14C FRE ranging between 135 and 2251±30 yr, objectively correlated to DIC contents and alkalinity. Deeper investigations of the relationship between 14C activity of DIC and environmental variables show that the geological substrate is the dominant factor in the 14C reservoir effect, and far more influential than the river flow discharge.

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“…Oceans and seas, as well as estuaries and rivers, represent a reservoir of anthropic substances including radionuclides, which could, given specific transfer conditions at the interface, be transported to land via spray and aerosols, or via simple exchange at the ocean-atmosphere interface and atmospheric transport by wind (Maro et al, 2005;Sheppard et al, 2006;Upstill-Goddard, 2006;Marang et al et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Flux of tritium from the sea to the atmosphere around a nuclear reprocessing plant: Experimental measurements and modelling for the Western English channel

Connan

Bois

Solier

et al. 2023

Journal of Environmental Radioactivity

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Modelling tritium flux from water to atmosphere: application to the Loire River

Cited by 15 publications

References 14 publications

Development of a Novel Passive Monitoring Technique to Showcase the 3D Distribution of Tritiated Water (HTO) Vapor in Indoor Air of a Nuclear Facility

Development of a Novel Passive Monitoring Technique to Showcase the 3D Distribution of Tritiated Water (HTO) Vapor in Indoor Air of a Nuclear Facility

Temporal and Spatial Variations of Freshwater Reservoir Ages in the Loire River Watershed

Flux of tritium from the sea to the atmosphere around a nuclear reprocessing plant: Experimental measurements and modelling for the Western English channel

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