Copper and Selenium in Rainwater, Soils and Alfalfa From Agricultural Ecosystems of Valparaiso Region, Chile

Gregori, Ida De; Lobos, G.; Lobos, Sofía; Pinochet, Hugo; Potin‐Gautier, Martine; Astruc, M.

doi:10.4067/s0366-16442000000100017

Cited by 6 publications

(3 citation statements)

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“…These soils, derived from stabilized paleodunes (Cosio et al, 2007), have a sandy-loam texture (Muena et al, 2010) and have been classified as Entisols (Soil Survey Staff, 2003). Los Maitenes has been described as the area most affected by the deposition of particulate matter from the smelting operation (Pinochet et al, 1999;De Gregori et al, 2000). Approximately 0.2 m 3 of soil was collected from each of four depths: 0-15, 15-30, 30-45 and 45-60 cm.…”

Section: Soil Samplingmentioning

confidence: 99%

Biodegradable chelate enhances the phytoextraction of copper by Oenothera picensis grown in copper-contaminated acid soils

et al. 2011

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Oenothera picensis plants (Fragrant Evening Primrose) grow in the acid soils contaminated by copper smelting in the coastal region of central Chile. We evaluated the effects of the biodegradable chelate MGDA (methylglycinediacetic acid) on copper extraction by O. picensis and on leaching of copper through the soil profile, using an ex situ experiment with soil columns of varying heights. MGDA was applied in four rates: 0 (control), 2, 6 and 10 mmol plant(-1). MGDA application significantly increased biomass production and foliar concentration, permitting an effective increase in copper extraction, from 0.09 mg plant(-1) in the control, to 1.3mg plant(-1) in the 6 and 10 mmol plant(-1) treatments. With 10 mmol plant(-1) rate of MGDA, the copper concentration in the leachate from the 30 cm columns was 20 times higher than in the control. For the 60 cm columns, copper concentration was 2 times higher than the control. It can be concluded that at increased soil depths, copper leaching would be minimal and that MGDA applications at the studied rates would not pose a high risk for leaching into groundwater. It can thus be stated that applications of MGDA are an effective and environmentally safe way to improve copper extraction by O. picensis in these soils.

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Section: Soil Samplingmentioning

confidence: 99%

Biodegradable chelate enhances the phytoextraction of copper by Oenothera picensis grown in copper-contaminated acid soils

et al. 2011

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“…MATERIAL VEGETAL Se obtuvieron semillas de Oenothera picensis en dos sitios del valle de Puchuncaví: (1) Los Maitenes (32°51'54,7'' S; 71°25'46,2'' O) a 2 km al oriente del Complejo Industrial Ventanas, un sitio altamente contaminado por cobre (González & Berqvist 1986b, Bruno 1992, De Gregori et al 2000 y (2) Maitencillo (32°40'27,1" S; 71°25'35,8" O), a 11 km al norte del Complejo Industrial, no afectado por contaminación cúprica (Muena et al 2010). Se recolectaron semillas de 5 individuos por sitio, las cuales fueron homogeneizadas.…”

Section: Materiales Y Métodosunclassified

“…González et al (2008) realizaron una prospección de especies potencialmente metalófitas para ser utilizadas en procesos de fitorremediación de cobre en el sector Los Maitenes, 3 km al oriente del Complejo Industrial Ventanas, localidad identificada como una de las más afectadas por la actividad del Complejo Industrial (Bruno 1992, De Gregori et al 2000. La prospección permitió identificar 22 especies, entre ellas destacó Oenothera picensis Phil.…”

Section: Introductionunclassified

Evaluación de la tolerancia al cobre de dos poblaciones de Oenothera picensis Phil. subsp. picensis (Onagraceae)

González

Neaman

2015

Gayana Bot.

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Environmental distribution and health impacts of As and Pb in crops and soils near Vinto smelter, Oruro, Bolivia

Rötting

García

Quintanilla

2013

Int. J. Environ. Sci. Technol.

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The Vinto Sb-Sn smelter (Oruro, Bolivia) has been linked to arsenic and heavy metal pollution in air, soils, residual waters of the smelter, and hair and urine of workers, but crop concentrations had not been assessed previously. In this article, alfalfa, onions, and carrots, separated into roots and shoots, were analyzed for As and Pb, together with corresponding soil samples. The aim was to assess the environmental distribution and potential health impacts of these toxic elements and to compare them to levels observed at other sites around the world. As and Pb concentrations in all analyzed crop samples exceed the FAO/WHO, UK or Chilean limits by 1.5-2 orders of magnitude and As health risk indices were 286 (carrot) and 651 (onion), showing that the potential health risk due to consumption of these products is extremely high. As and Pb soil-plant transfer factors are similar to other contaminated sites around the world, but daily intake and health risk index for As are much higher in Vinto area due to very high concentrations in soils. Arsenic and lead soil and crop concentrations suggest increasing trends toward VMC. Correlations are significant for Pb in some crop fractions, but not for As, possibly due to considerable geogenic contributions to soil As in the area. In future surveys, larger numbers of soil and crop samples should be analyzed, and additional analyses should be carried out to distinguish anthropogenic and geogenic sources of As and Pb in soils and crops in the area.

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Copper and Selenium in Rainwater, Soils and Alfalfa From Agricultural Ecosystems of Valparaiso Region, Chile

Cited by 6 publications

References 0 publications

Biodegradable chelate enhances the phytoextraction of copper by Oenothera picensis grown in copper-contaminated acid soils

Biodegradable chelate enhances the phytoextraction of copper by Oenothera picensis grown in copper-contaminated acid soils

Evaluación de la tolerancia al cobre de dos poblaciones de Oenothera picensis Phil. subsp. picensis (Onagraceae)

Environmental distribution and health impacts of As and Pb in crops and soils near Vinto smelter, Oruro, Bolivia

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