Radioanalytical assessment of environmental contamination around non-remediated uranium mining legacy site and radium mobility

Carvalho, Fernando P.; Oliveira, João M.; Malta, Margarida; Lemos, M. Eugénia

doi:10.1007/s10967-013-2734-1

Cited by 25 publications

(11 citation statements)

References 19 publications

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“…An abundant literature is available concerning the dispersion in the environment of natural radionuclides associated with uranium mining and milling activities (Neame et al 1982;Waite et al 1988;Mosinets, 1991;Bunzl et al 1994;Jurado Vargas et al 1997, McConnell et al 1998Fernandes et al 1998;Fernandes and Franklin, 2001;Fernandes et al 2006;Lozano, 2000Vera Tom e et al 2002;Carvalho et al 2007Carvalho et al , 2014Frostick et al 2008Frostick et al , 2011Kipp et al 2009;Mom cilovi c et al 2013;Blanco Rodríguez et al 2014;Kayzar et al 2014). However, only few published studies offer maps of radionuclide distribution (Dragovi c et al 2014;Erenturk et al 2014), in particular for uranium mining impacted environments (Vandenhove et al 2006;Bollh€ ofer et al 2006Bollh€ ofer et al , 2014.…”

Section: Introductionmentioning

confidence: 99%

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Uranium decay daughters from isolated mines: Accumulation and sources

Cuvier

Panza

Pourcelot

et al. 2015

Journal of Environmental Radioactivity

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Section: Introductionmentioning

confidence: 99%

“…Literature data are from the studies ofCarvalho et al (2007Carvalho et al ( , 2014. Note the logarithmic scales for x and y axis.…”

mentioning

confidence: 99%

Uranium decay daughters from isolated mines: Accumulation and sources

Cuvier

Panza

Pourcelot

et al. 2015

Journal of Environmental Radioactivity

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“…According to recent estimates, about 0.8-1 mln people worldwide have generally received or are at risk of receiving additional doses of both external and internal radiation due to the mining of radioactive minerals, and over 10.3 mln people -after catastrophes at the Chornobyl and Fukushima-1 Nuclear Power Plants [6]. Penetrating via skin, respiratory organs, drinking water and food, radionuclides get involved in the exchange of substances between environmental components and organisms of humans and animals [7,8]. The problem of minimizing radioactive burden on the population, residing in the territories, contaminated with radionuclides, mainly relies on the decrease in the radionuclide contamination level of food products and on the restraint of their being absorbed in the digestive tract [9].…”

Section: Resultsmentioning

confidence: 99%

The issue of radioactive contamination in context of ecosystem services development

Чоботько¹,

Raychuk²,

McDonald³

2016

Agric. sci. pract.

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The aim of the article was to defi ne the role of the radioactive environment contamination in the formation of ecosystem services strategy. Methods. Monographic, systemic and structural, factor analysis, abstract and logical research methods have been used. The data from the State Statistics Service of Ukraine, the Ministry of Agrarian Policy and Food of Ukraine, the Ministry of Ecology and Natural Resources of Ukraine, materials of scientifi c researches, international materials and reports and other literary sources on the issues investigated have been used as an information base. Results. Retrospective analysis of sources and state of radioactive eco- systems contamination was conducted and the priority steps in developing the concept of ecosystem services in conditions of radiation contamination were found. Conclusions. The current socio-ecological paradigm of the transition from environmental use to environmental management should be refl ected in the relevant envi- ronmental management mechanisms. Currently, when assessing the state of ecosystem services in Ukraine and worldwide one must take into account the changes in food demand of residents of radioactively contaminated areas, the exploitation of radioactively safe ecosystems growth, their overload and degradation. All of this re- quires an inventory of ecosystem services by type, region, consumers, etc. and the formation of a state register of ecosystem services with a clear assignment of area of responsibility for appropriate natural ecosystems. This will help to make the economic evaluation of different ecosystem services and mechanisms of charges for ecosystem services.

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“…Uranium extraction activities generate high amounts of potentially hazardous byproducts including waste rocks, mill tailings, and can also impact lands, river and lake sediments (Abdelouas, 2006, Morin et al, 2016, which can result in their enrichment in natural radionuclides such as 226 Ra (Carvalho et al, 2014;Reyss et al, 2016). Due to the radiotoxicity of this radionuclide, contaminated materials must therefore be appropriately managed in the long term in order to minimize its potential migration to and accumulation in human and ecological targets.…”

Section: Introductionmentioning

confidence: 99%

Early diagenesis of radium 226 and radium 228 in lacustrine sediments influenced by former mining sites

Mangeret

Reyss

Seder-Colomina

et al. 2020

Journal of Environmental Radioactivity

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The early diagenesis of long-lived radium isotopes 226 Ra and 228 Ra was evaluated in U-mining impacted granitic lake sediments Ra activities in sediment pore waters were measured for the first time using very low background Germanium well detectors 226 Ra and 228 Ra early diagenesis seem to be closely related to the reductive dissolution of iron oxyhydroxides Calculated diffusive fluxes of Ra are significantly lower than those previously reported in Raenriched sediments 3 ABSTRACT Radium is a naturally occurring radioactive element commonly found at low levels in natural systems such as lacustrine or marine sediments. Anthropogenic activities including former uranium mining activities can lead to the dissemination of radium isotopes having high radiological toxicities, which potentially threaten the safety of nearby environments. Although radium mobility in oxidized environments is known to be largely governed by sorption/desorption onto Fe and Mn oxyhydroxides and coprecipitation with sulfate minerals (e.g. barite), little is known regarding its behavior under reducing conditions, which are the conditions typically encountered in organic-rich systems such as wetlands and lake sediments. The present study aims at understanding the behavior of long-lived radium isotopes (226 Ra and 228 Ra), during early diagenesis of lake sediments contaminated by former uranium mining activities. Solid and pore water concentrations of 226 Ra and 228 Ra were determined using ultra low background gamma spectrometry, which allowed improvement of detection limits and measurement accuracy. This study shows that the downcore distribution of radium isotopes is closely related to the reductive dissolution of iron and manganese oxyhydroxides below the sediment-water interface. The resulting diffusive fluxes of 226 Ra and 228 Ra (4.1 10-25 and 4.7 10-28 mol.cm-2 .s-1) are however significantly lower than other radium-impacted environments, such as uranium mill tailings pond and phosphate industry-impacted sediments, and are similar to those reported for natural marine environments. Hence, in the reduced lake sediments of Saint-Clement, the major fraction of radium is trapped by the solid phase, while early diagenesis only induces a slight mobility of this radioelement.

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Radioanalytical assessment of environmental contamination around non-remediated uranium mining legacy site and radium mobility

Cited by 25 publications

References 19 publications

Uranium decay daughters from isolated mines: Accumulation and sources

Uranium decay daughters from isolated mines: Accumulation and sources

The issue of radioactive contamination in context of ecosystem services development

Early diagenesis of radium 226 and radium 228 in lacustrine sediments influenced by former mining sites

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