Management of uranium mill tailing: Geochemical processes and radiological risk assessment

Fernandes, Horst Monken; Franklin, Mariza Ramalho; Veiga, Lene H.S.; Freitas, Patrícia Martins de; Gomiero, Luis A.

doi:10.1016/0265-931x(95)00032-6

Cited by 60 publications

(23 citation statements)

References 12 publications

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“…Concentrations of Fe, Al, and Mn are lower, whereas those of Zn, Cu, Pb, and Ni are higher than the reported values for other coastal lagoons of Rio de Janeiro State, which are located mostly in rural areas (Fernandes 1996). Concentrations of these trace metals are in the upper range of values reported for lagoons located in industrialized (e.g., Ria de Aveiro Lagoon, Portugal (Monterroso et al 2003), Indian lagoon, USA (Trocine and Trefry 1996), and Szczecin Lagoon, Poland (Glasby et al 2004)) and urban areas (e.g., Chi-Ku Lagoon, Taiwan (Chen 2002), Venice Lagoon, Italy (Sfriso et al 1995), Altata Lagoon, Mexico (Green-Ruiz and Paez-Osuna 2001), and San Rafael Lagoon, Chile (Ahumada and Rudolph 2004)).…”

Section: Resultscontrasting

confidence: 81%

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Heavy metal inputs evolution to an urban hypertrophic coastal lagoon, Rodrigo De Freitas Lagoon, Rio De Janeiro, Brazil

Loureiro

Fernandez²,

Herms³

et al. 2009

Environ Monit Assess

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This work discusses the temporal variation of metal concentrations in a hypertrophic coastal lagoon located in the metropolitan area of Rio de Janeiro (Brazil). The lagoon watershed includes one of the mostly densely urbanized areas of the city but without industrial activities. Six sediment cores were collected in the lagoon between May and July 2003 and analyzed for the concentration of metals (Fe, Al, Mn, Zn, Pb, Cu, Cr, and Ni). Typical sedimentation rate was calculated as being 0.75 cm year( - 1) and was uniform for at least the past 70 years. Therefore, the alterations in the dynamics of the lagoon caused by changes in its watershed were clearly indicated in sediment cores. The construction of an artificial canal to the sea and the increasing urbanization and soil use changes were the major factors affecting metal accumulation in the lagoon sediments. Metals typical of anthropogenic urban sources (Pb, Zn, and Cu) showed increasing loads following urbanization.

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Section: Resultscontrasting

confidence: 81%

“…In a global, scale they occupy from tropical to polar environments (Fernandes 1996) about 13% of the world coastal areas (332,000 km 2 ) with an average area of 78 km 2 and an average length around 10 km. The linking of coastal lagoons with the sea is made through channels or bars.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal inputs evolution to an urban hypertrophic coastal lagoon, Rodrigo De Freitas Lagoon, Rio De Janeiro, Brazil

Loureiro

Fernandez²,

Herms³

et al. 2009

Environ Monit Assess

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“…Even when mining activities have ceased, installations at uranium mines can have a significant impact on the environment. Investigations on terrestrial natural radiation near abandoned uranium mines have received particular attention worldwide and led to extensive surveys in many countries (Fernandes et al 1996;Vandenhove et al 2006;Carvalho et al 2007). These results are of importance in making estimations of population exposures and serve as reference information to assess any changes in radioactivity level.…”

Section: Introductionmentioning

confidence: 99%

Distribution of natural radionuclides in surface soils in the vicinity of abandoned uranium mines in Serbia

Momčilović

Kovačević²,

Tanic³

et al. 2012

Environ Monit Assess

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The activity concentrations of natural radionuclides in soils from the area affected by uranium mining at Stara Planina Mountain in Serbia were studied and compared with the results obtained from an area with no mining activities (background area). In the affected area, the activity concentrations ranged from 1.75 to 19.2 mg kg(-1) for uranium and from 1.57 to 26.9 mg kg(-1) for thorium which is several-fold higher than those in the background area. The Th/U, K/U, and K/Th activity ratios were also determined and compared with data from similar studies worldwide. External gamma dose rate in the air due to uranium, thorium, and potassium at 1 m above ground level in the area affected by uranium mining was found to be 91.3 nGy h(-1), i.e., about two-fold higher than that in background area. The results of this preliminary study indicate the importance of radiological evaluation of the area and implementation of remedial measures in order to prevent further dispersion of radionuclides in the environment.

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“…Accurate measurements of the total radionuclide concentration in contaminated soils are required to assess the potential risk of these areas (Krizˇman et al, 1995;Fernandes et al, 1996). However, the ecological behaviour of radionuclides in the soil is closely related to the distribution of other chemical species in the solid and liquid phases of the soil.…”

Section: Introductionmentioning

confidence: 99%

Fractionation of natural radionuclides in soils from a uranium mineralized area in the south-west of Spain

Blanco

Tomé

Lozano

2005

Journal of Environmental Radioactivity

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Management of uranium mill tailing: Geochemical processes and radiological risk assessment

Cited by 60 publications

References 12 publications

Heavy metal inputs evolution to an urban hypertrophic coastal lagoon, Rodrigo De Freitas Lagoon, Rio De Janeiro, Brazil

Heavy metal inputs evolution to an urban hypertrophic coastal lagoon, Rodrigo De Freitas Lagoon, Rio De Janeiro, Brazil

Distribution of natural radionuclides in surface soils in the vicinity of abandoned uranium mines in Serbia

Fractionation of natural radionuclides in soils from a uranium mineralized area in the south-west of Spain

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