Chemical and mineralogical composition of the Mongolian rural soils and their uranium sorption behavior

Tserenpil, Sh.; Maslov, O. D.; Norov, N.; Liu, Q.C.; Fillipov, M.F.; Theng, B. K. G.; Белов, А. Г.

doi:10.1016/j.jenvrad.2012.11.016

Cited by 10 publications

(1 citation statement)

References 16 publications

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“…, but under neutral conditions occurs as hydroxide complexes and its adsorption increases with the increase in the CEC. The maximum adsorption of U is at pH 5 and then decreases up to 7.7 (Tserenpil et al 2013). The acid pH of soils from the Mortórios area influences the capacity on the adsorption of metals and metalloids.…”

Section: Geochemistry Of Soilsmentioning

confidence: 98%

Assessment of metal and metalloid contamination in soils trough compositional data: the old Mortórios uranium mine area, central Portugal

Neiva

Albuquerque

Antunes

et al. 2019

Environ Geochem Health

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Soils from the old Mortórios uranium mine area were studied to look for contamination, as they are close to two villages, up to 3 km away, and used for agriculture. They are mainly contaminated in U and As and constitute an ecological threat. This study attempts to outline the degree to which soils have been affected by the old mining activities through the computation of significant hot clusters, Traditional geostatistical approaches commonly use raw data (concentrations) accepting that the analyzed elements represent the soil's entirety. However, in geochemical studies these elements are just a fraction of the total soil composition. Thus, considering compositional data is pivotal. The spatial characterization, considering raw and compositional data together, allowed a broad discussion about not only the concentrations' spatial distribution, but also a better understanding on the possibility of trends of ''relative enrichment'' and, furthermore an insight in U and As fate. The highest proportions (compositional data) on U (up to 33%), As (up to 35%) and Th (up to 13%) are reached in the south-southeast segment. However, the highest concentrations (raw data) occur in north and northwest of the studied area, pointing out to a ''relative enrichment'' toward the south-southeast zone. The Mondego Sul area is mainly contaminated in U and As, but also in Co, Cu, Pb and Sb. The Mortórios area is less contaminated than the Mondego Sul area.

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Section: Geochemistry Of Soilsmentioning

confidence: 98%