Long-term toxicity assessment of soils in a recovered area affected by a mining spill

Romero‐Freire, Ana; Fernández, Inés García; Simón, M.; Garzón, F.J. Martínez

doi:10.1016/j.envpol.2015.10.029

Cited by 43 publications

(22 citation statements)

References 32 publications

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“…These results indicate that the acidity, the presence of soluble salts coming from the sulphide oxidation and the high concentration in As, were strongly related with the reduction in the root elongation of lettuce seeds. These results agree with previous toxicity bioassays developed in soil of the area, where a potential risk of pollution was reported after root elongation and soil respiration tests [42]. Otherwise, in the neutral-alkaline sector (S2) the low percentage of samples in relation to the total area that showed phytotoxicity hinders the potential relationship among variables, so further studies in the potentially polluted sites of the neutral-alkaline sector are needed.…”

Section: Pbsupporting

confidence: 90%

Evolution of the Residual Pollution in Soils after Bioremediation Treatments

et al. 2020

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This study is focused on one of the most important spills that ever happened in Europe, the Aznalcóllar’s mine spill. The extensive application of phytostabilization in the area led to the implementation of the Guadiamar Green Corridor (GGC). Soil physicochemical properties were analyzed and the total concentration of Pb, As, Zn and Cu was measured by X-ray fluorescence (XRF); bioassay using Lactuca sativa L. was applied to assess potential toxicity. Two decades after the accident, some soils affected by residual contamination continue to appear in the area. According to regulatory levels, Pb and As concentrations are exceeded in around 13%and 70%, respectively, in the uppermost part of the soils (first 10 cm). The change in soil properties after bioremediation treatment positively promoted the reduction in the potential mobility of pollutants by the increase in pH, CaCO3 content and organic carbon. Anyway, the bioassay with Lactuca sativa, indicated that around 25% of the soils showed toxicity by the reduction of the root elongation in relation to the control samples. Our results indicate that monitoring of the GGC is still needed, together with the application of soil recovery measures to reduce the potential toxicity in some sectors of the affected area.

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Section: Pbsupporting

confidence: 90%

Evolution of the Residual Pollution in Soils after Bioremediation Treatments

et al. 2020

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“…Rather than attempting to associate its presence in the hair of women with health effects, which could be studied by future investigations, these results should be understood as an exploration of different arsenic exposure time frames. The data clearly indicate the presence of the metalloid in concentrations similar to those reported in areas where mines exist [16][17][18] . The case that exceeds the reference value is an indication of the existence of populations with a higher degree of vulnerability, or where episodes have occurred in which arsenic increased due to accidents or disasters in mining areas, such as in Spain 19 and more recently in Mexico 20 and Brazil 21 .…”

Section: Discussionsupporting

confidence: 78%

Perception of pollution and arsenic in hair of indigenous living near a ferronickel open-pit mine (Córdoba, Colombia): Public health case report

Idrovo

Rivero-Rubio

Amaya-Castellanos

2017

revsal

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“…However, the soil pH as a major factor affecting element mobility and cation exchange capacity at extremely acidic sites (pH \ 4) may be responsible for soil infertility (Fig. 2) due to partial hydrolysis of primary silicates (Martín et al 2008) and increased bioavailability of phytotoxic metal(loid)s (Romero-Freire et al 2016). The highest concentrations of trace elements have been found in samples revealing circumneutral pH (except for sample R55).…”

Section: The Ph and Element Concentrations Of Soilsmentioning

confidence: 87%

Geochemical background of potentially toxic trace elements in reclaimed soils of the abandoned pyrite–uranium mine (south-central Poland)

Gałuszka

Migaszewski

Duczmal-Czernikiewicz

et al. 2016

Int. J. Environ. Sci. Technol.

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Spatial distribution patterns of As, Ba, Cd, Cr, Cu, Mn, Ni, Pb, U and Zn were determined in topsoil samples collected after 40 years of chemical remediation conducted in the inoperative ''Staszic'' pyrite-uranium mine in the Holy Cross Mountains, south-central Poland. Soil samples were taken from 58 sites using a systematic random sampling design. Selected samples were subjected to an X-ray diffractometry analysis on bulk soils and separated clay fractions. Hematite, goethite and gypsum are common mineral phases in soil samples. Technogenic soils developed on reclaimed mine spoils show uniform spatial element distribution patterns and additionally a distinct enrichment in As, Pb, Mn, U and Zn. Mineral and chemical composition of soils vs. rocks points to the lithogenic source of the determined elements. The results of chemical analysis have been used for evaluation of geochemical background of trace elements in the study area with the iterative 2r-technique. This investigation shows that using mean crustal element concentrations (Clarke values) as proxies of threshold values in soils are not useful for determination of strongly positive geochemical anomalies. A modified enrichment factor, i.e. a local enrichment factor, is proposed for identification of sites where soils are contaminated.

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Long-term toxicity assessment of soils in a recovered area affected by a mining spill

Cited by 43 publications

References 32 publications

Evolution of the Residual Pollution in Soils after Bioremediation Treatments

Evolution of the Residual Pollution in Soils after Bioremediation Treatments

Perception of pollution and arsenic in hair of indigenous living near a ferronickel open-pit mine (Córdoba, Colombia): Public health case report

Geochemical background of potentially toxic trace elements in reclaimed soils of the abandoned pyrite–uranium mine (south-central Poland)

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