Biogeochemistry in Neves Corvo mining region, Iberian Pyrite Belt, Portugal

Batista, Maria João; Abreu, Maria Manuela; Pinto, Manuel

doi:10.1016/j.gexplo.2006.08.004

Cited by 38 publications

(12 citation statements)

References 8 publications

(25 reference statements)

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“…This order disagrees with previous studies showing Zn as the most and Pb the least readily accumulated TE in vegetation (Kabata-Pendias and Pendias 2001; Chopin and Alloway 2007). This discrepancy resulted from diversity of factors such as differences in TEs speciation and the consequent variations in mobility and bioavailability, soil conditions, plants age and state of health, and element concentrations (Ross 1994;Kabata-Pendias and Pendias 2001;Batista et al 2007). However, Pb and Zn concentrations (Fig.…”

Section: Tes Transfer From Soil To C Intybuscontrasting

confidence: 88%

Mobility of selected trace elements in Mediterranean red soil amended with phosphogypsum: experimental study

Kassir

Darwish

Shaban

et al. 2011

Environ Monit Assess

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Soil amendment by phosphogypsum (PG) application becomes of increasing importance in agriculture. This may lead, however, to soil, plant, and groundwater contamination with trace elements (TEs) inherently present in PG. Monitoring of selected TEs (Pb, Zn, Cu, and Cd) distribution and mobility in a Mediterranean red soil profile has been performed in soil parcels applied with PG over a 16-month period. Concentrations were measured in soil and plant samples collected from various depth intervals at different points in time. TEs sequential extraction was performed on soil and PG samples. Results showed soil profile enrichment peaked 5 months after PG application for Cd, and 12 months for Pb, Zn, and Cu. Rainwater, pH, total organic carbon, and cationic exchange capacity were the main controlling factors in TEs accumulation in soils. Cd was transferred to a soil depth of about 20 cm. Zn exhibited mobility towards deeper layers. Pb and Cu were accumulated in around 20-55-cm-deep layers. PG increased the solubility of the studied TEs; PG-applied soils contained TEs bound to exchangeable and acid-soluble fractions in higher percentages than reference soil. Pb, Zn, and Cu were sorbed into mineral soil phases, while Cd was mainly found in the exchangeable (bio-available) form. The order of TEs decreasing mobility was Zn > Cd > Pb > Cu. Roots and leaves of existed plants, Cichorium intybus L., accumulated high concentrations of Cd (1-2.4 mg/kg), exceeding recommended tolerable levels, and thus signifying potential health threats through contaminated crops. It was therefore recommended that PG should be applied in carefully established, monitored, and controlled quantities to agricultural soils.

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Section: Tes Transfer From Soil To C Intybuscontrasting

confidence: 88%

Mobility of selected trace elements in Mediterranean red soil amended with phosphogypsum: experimental study

Kassir

Darwish

Shaban

et al. 2011

Environ Monit Assess

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“…Zn > Pb > Cu > As This order agrees with previous studies have shown that Zn is the most, and As the least, readily accumulated trace elements in vegetation (Jung and Thornton 1996;Kabata-Pendias and Pendias 2001;Lee et al 2001;Madejón et al 2002;Alvarenga et al 2004;Batista et al 2007).…”

Section: Discussionsupporting

confidence: 92%

“…kg -1 Zn at Huelva. These values compared well with those found at Aljustrel (Alvarenga et al 2004) and Neves Corvo (Batista et al 2007), two mining sites from the Iberian Pyrite Belt, and at a location near Aznalcollar (Madejón et al 2002;Kraus and Wiegand 2006), which belongs to the same geological formation as Huelva (Saez et al 1999;Lunar et al 2002). Soil background values were reached from 3 km from the mine and smelter at Tharsis to 10 km in the prevailing downwind direction, from 5 km to less than 7 km (downwind direction) at Ríotinto, and within less than 2 km at Huelva, independently of the direction (Figs.…”

Section: Discussionsupporting

confidence: 81%

Distribution and Mobility of Trace Elements in Soils and Vegetation Around the Mining and Smelting Areas of Tharsis, Ríotinto and Huelva, Iberian Pyrite Belt, SW Spain

Chopin

Alloway

2007

Water Air Soil Pollut

143

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Trace elements may present an environmental hazard in the vicinity of mining and smelting activities. However, the factors controlling their distribution and transfer within the soil and vegetation systems are not always well defined. Total concentrations of up to 15,195 mg . kg -1 As, 6,690 mg . kg -1 Cu, 24,820 mg . kg -1 Pb and 9,810 mg . kg -1 Zn in soils, and 62 mg . kg -1 As, 1,765 mg . kg -1 Cu, 280 mg . kg -1 Pb and 3,460 mg . kg -1 Zn in vegetation were measured. However, unusually for smelters and mines of a similar size, the elevated trace element concentrations in soils were found to be restricted to the immediate vicinity of the mines and smelters (maximum 2-3 km). Parent material, prevailing wind direction, and soil physical and chemical characteristics were found to correlate poorly with the restricted trace element distributions in soils. Hypotheses are given for this unusual distribution: (1) the contaminated soils were removed by erosion or (2) mines and smelters released large heavy particles that could not have been transported long distances. Analyses of the accumulation of trace elements in vegetation (median ratios: As 0.06, Cu 0.19, Pb 0.54 and Zn 1.07) and the percentage of total trace elements being DTPA extractable in soils (median percentages: As 0.06%, Cu 15%, Pb 7% and Zn 4%) indicated higher relative trace element mobility in soils with low total concentrations than in soils with elevated concentrations.

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“…Contamination arising from such mine spoils not only affects the water quality of the surrounding areas but also may cause soil degradation and environmental hazards around the mine sites (Chopin et al 2003;Fernández-Caliani et al 2005;Ferreira et al 2005;Barba et al 2005;Chopin and Alloway 2007a, b;Batista et al 2007;López et al 2008).…”

Section: Mining and Environmentmentioning

confidence: 99%

“…The disposal of mine wastes often produces more environmental problems than the mining operations themselves. The pollutants may be transferred from tailings and waste rock dumps to nearby soils by acid mine drainage and/or atmospheric deposition of wind-blown dust, depending on climatic and hydrologic conditions, (Aslibekian and Moles 2003;Chopin and Alloway 2007a, b;Batista et al 2007;López et al 2008), which determine locations of potentially contaminated areas.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Pollution in Soils Around the Abandoned Mine Sites of the Iberian Pyrite Belt (Southwest Spain)

Fernández-Caliani

Barba-Brioso

González

et al. 2008

Water Air Soil Pollut

142

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This paper investigates the pollution load of selected trace elements in 32 soil samples collected around 21 different mining areas of the Iberian Pyrite Belt (Southwest Spain), integrating chemical data with soil parameters to help understand the partitioning and mobility of pollutants. The minesoils are depleted in acid neutralising minerals and show limiting physicochemical properties, including low pH values and very high anomalies of potentially hazardous metals. The total concentrations of As (up to 1,560 mg kg −1 ) and certain heavy metals (up to 2,874 mg kg −1 Cu, 6,500 mg kg −1 Pb, 6,890 mg kg −1 Zn, 62 mg kg −1 Hg and 22 mg kg −1 Cd) are two orders of magnitude above the soil background values. The close association of Cd and Zn with the carbonate content in limeamended minesoils suggests metal immobilisation through adsorption and/or co-precipitation mechanisms, after acid neutralisation, whereas As and Pb are similarly partitioned into the soil and mostly associated with iron oxy-hydroxides.

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Biogeochemistry in Neves Corvo mining region, Iberian Pyrite Belt, Portugal

Cited by 38 publications

References 8 publications

Mobility of selected trace elements in Mediterranean red soil amended with phosphogypsum: experimental study

Mobility of selected trace elements in Mediterranean red soil amended with phosphogypsum: experimental study

Distribution and Mobility of Trace Elements in Soils and Vegetation Around the Mining and Smelting Areas of Tharsis, Ríotinto and Huelva, Iberian Pyrite Belt, SW Spain

Heavy Metal Pollution in Soils Around the Abandoned Mine Sites of the Iberian Pyrite Belt (Southwest Spain)

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