Speciation of 238U, 226Ra, 210Pb, 228Ra, and stable Pb in the soil near an exhaust ventilating shaft of a uranium mine

Bunzl, K.; Kretner, R.; Schramel, P.; Szeles, M.; Winkler, R.

doi:10.1016/0016-7061(94)00032-6

Cited by 31 publications

(14 citation statements)

References 6 publications

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“…Plants take up U from the readily exchangeable and soluble fractions of the soil. However, according to previous work, negligible amount of U(VI) remain in the soluble and exchangeable forms over any significant time, thereby limiting the amount available for plant uptake and subsequent phytoremediation (Bunzl et al, 1995;Sheppard and Thibault, 1992). In addition, plant-associated microorganisms, including mycorrhizal fungi, may have significant effects on U uptake (Rufyikiri et al, 2002(Rufyikiri et al, , 2003(Rufyikiri et al, , 2004b.…”

Section: +mentioning

confidence: 98%

Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil

et al. 2005

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Phytostabilization strategies may be suitable to reduce the dispersion of uranium (U) and the overall environmental risks of U-contaminated soils. The role of Glomus intraradices, an arbuscular mycorrhizal (AM) fungus, in such phytostabilization of U was investigated with a compartmented plant cultivation system facilitating the specific measurement of U uptake by roots, AM roots and extraradical hyphae of AM fungi and the measurement of U partitioning between root and shoot. A soil-filled plastic pot constituted the main root compartment (C A ) which contained a plastic vial filled with U-contaminated soil amended with 0, 50 or 200 mg KH 2 PO 4 )P kg -1 soil (C B ). The vial was sealed by coarse or fine nylon mesh, permitting the penetration of both roots and hyphae or of just hyphae. Medicago truncatula plants grown in C A were inoculated with G. intraradices or remained uninoculated. Dry weight of shoots and roots in C A was significantly increased by G. intraradices, but was unaffected by mesh size or by P application in C B . The P amendments decreased root colonization in C B , and increased P content and dry weight of those roots. Glomus intraradices increased root U concentration and content in C A , but decreased shoot U concentrations. Root U concentrations and contents were significantly higher when only hyphae could access U inside C B than when roots could also directly access this U pool.

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Section: +mentioning

confidence: 98%

Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil

et al. 2005

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“…Between pH 4.0 and 7.5, the pH range of most soils, U(VI) exists primarily in hydrolyzed forms (Meinrath et al, 1996). Bunzl et al (1995) found that a significant portion of U contaminant in soils exposed to vented air from U ore mine shafts was incorporated into the clay lattice of the soils. The least amount of U was found in the exchangeable and soluble forms, thereby limiting the amount available for plant uptake and subsequent phytoremediation.…”

Section: Uranium Behavior In Soilsmentioning

confidence: 99%

Literature review: Phytoaccumulation of chromium, uranium, and plutonium in plant systems

Hossner¹,

Loeppert²,

Newton

et al. 1998

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“…Assim, para estimar um possível risco de exposição à radiação desses radionuclídeos no longo prazo, não somente a sua atividade total no solo mas também a sua partição geoquímica, a biodisponibilidade para os processos ecológicos e os fatores que estão influenciando nessa distribuição precisam ser conhecidos (Bunzl et al, 1995;Davis et al, 1999;Butler et al, 1999).…”

Section: Introductionunclassified

“…O 226 Ra é o isótopo mais importante de ocorrência na natureza, devido à sua meia-vida longa (1622 anos), associada à abundância do seu precursor ( 238 U) (Molinari & Snodgras, 1990). Procedimentos de extração sequencial têm sido frequentemente empregados para investigar o comportamento de metais pesados e radionuclídeos artificiais no solo e sedimentos (Bourg et al, 1999;Wasserman et al, 2002a,b), porém, para o estudo do comportamento dos radionuclídeos naturais, esses procedimentos têm sido usados em poucos casos (Bunzl et al, 1995;Lima & PennaFranca, 1998;Schultz et al, 1998 …”

Section: Introductionunclassified

Geoquímica de radionuclídeos naturais em solos de áreas circunvizinhas a uma Unidade de Mineração e Atividade de Urânio

Cardoso¹,

Sobrinho

Wasserman

et al. 2009

Rev. Bras. Ciênc. Solo

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Speciation of 238U, 226Ra, 210Pb, 228Ra, and stable Pb in the soil near an exhaust ventilating shaft of a uranium mine

Cited by 31 publications

References 6 publications

Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil

Effects of the mycorrhizal fungus Glomus intraradices on uranium uptake and accumulation by Medicago truncatula L. from uranium-contaminated soil

Literature review: Phytoaccumulation of chromium, uranium, and plutonium in plant systems

Geoquímica de radionuclídeos naturais em solos de áreas circunvizinhas a uma Unidade de Mineração e Atividade de Urânio

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