Micro-spatial variation of soil metal pollution and plant recruitment near a copper smelter in Central Chile

Ginocchio, Rosanna; Carvallo, Gastón O.; Toro, Ignacia; Bustamante, Elena; Silva, Yasna; Sepúlveda, Nancy

doi:10.1016/j.envpol.2003.08.020

Cited by 89 publications

(50 citation statements)

References 13 publications

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“…On the other hand, the use of field-collected soils presents several difficulties. First, in areas near copper mining activities, soils have high concentrations of several trace elements (Cu, Pb, Zn, Cd and As, among others; De Gregori et al, 2003;Ginocchio et al, 2004). In this case, it could be difficult to distinguish between the effects of different trace elements on the response of the earthworms.…”

Section: (C)mentioning

confidence: 99%

Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile

Ávila

Gaete

Sauve

et al. 2009

Chilean J. Agric. Res.

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500 mg kg-1), regardless of OM concentrations. Cocoon production decreased in the soils with Cu concentrations below 500 mg kg-1 when OM concentrations were below 3.5%. In contrast, cocoon production did not vary when OM concentrations were above 3.5%. The same effect of OM was observed on juvenile production. In this case, the threshold for OM concentration was 2.5%. It was concluded that it is important to consider OM concentrations in order to predict the biological response of earthworms in these soils.]]>

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Section: (C)mentioning

confidence: 99%

Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile

Ávila

Gaete

Sauve

et al. 2009

Chilean J. Agric. Res.

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“…Several previous studies highlighted the importance of using field-collected soils -and not artificiallycontaminated soils -for phytotoxicity tests for assessment of soil quality of metal-contaminated soils (Hamels et al, 2014;McBride et al, 2009;Smolders et al, 2009 Zn, Cd and As, among others) (De Gregori et al, 2003;Ginocchio et al, 2004). In this case, it might be difficult to distinguish between the effects of different metals on plant responses.…”

Section: Introductionmentioning

confidence: 99%

Thresholds of copper toxicity to lettuce in field-collected agricultural soils exposed to copper mining activities in Chile

Verdejo

Ginocchio

Sauvé

et al. 2016

J. Soil Sci. Plant Nutr.

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Several previous studies highlighted the importance of using field-collected soils instead of artificially spiked contaminated soils for phytotoxicity tests. However, the use of field-collected soils presents several difficulties for interpretation of results, due to presence of various contaminants in the soil and unavoidable differences in the physicochemical properties of the tested soils. The objective of this study was to estimate thresholds of copper phytotoxicity in topsoils of 27 agricultural areas historically contaminated by mining activities in Chile. We performed standard emergence and early growth (21 days) tests (OECD 208 and ISO 11269-2) with lettuce. The response of lettuce was best explained by Cu toxicity and P deficiency. Growth of lettuce was related to soil total Cu concentration and Olsen-P and was not affected by soluble Cu (extractable by 0.1 M KNO 3 ) or Cu 2+ free ion activity of the soil solution. Thus, lettuce has a limited applicability for metal toxicity assessment in metalcontaminated soils, due to sensitivity of its response to P deficiency. However, it was possible to determine toxic thresholds for shoot concentrations of Cu in lettuce for responses of shoot and root length, suggesting that shoot concentrations of Cu in lettuce can be useful as indicators of Cu toxicity even in soils with a wide range of nutrient concentrations.

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“…When abandoned, these sites may be converted to new land uses without additional regulation. Studies of contaminants in soils at these and other sites have been performed considering the type and extent of pollutants in the involved area (Romero et al, 1999;Ginocchio et al, 2004;Molina et al, 2009;Escudey et al, 2007;Badilla-Ohlbaum et al, 2001;Palma-Fleming et al, 2000). The systematic evaluation of SAPPC in Chile began only 5 years ago, in 2010, and has targeted defined areas that have been environmentally impacted by one or more potentially polluting activities, which ended at some point without a proper site closure process.…”

Section: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 99%

Evaluation of Potential Methane Generation in the Investigation of an Abandoned Contaminated Landfill in Santiago, Chile

Cortés¹,

Montalvo

2016

Braz. J. Chem. Eng.

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-This study presents the environmental evaluation of an abandoned and potentially contaminated landfill using analyses for the presence of heavy metals and for methane generation potential. The site is located in the city of Santiago, Chile, and was used as a rural landfill for domestic, industrial and construction waste until 1978, but is now in a heavily urbanized area and surrounded by houses. Analyses performed on 24 samples taken in and around the site show Potential Methane Generation (PMG) values between 1.6% and 11.3% of maximum projected levels. These low values, compared to those of an active landfill, indicate that waste material stored in the site has a low capacity to generate methane. Concentrations of heavy metals in the surface and deep soil are similar to typical levels for these metals in normal soil, according to international USEPA standards, and do not present imminent risk to human health. The use of the PMG test technique for the study of the health risk of an abandoned landfill is a new contribution to the Chilean evaluation methodology and management program for Abandoned Sites with Potential Presence of Contaminants (SAPPC). As part of the environmental management strategy for the site, two of the five operable units studied were transformed into a park after this study.

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Micro-spatial variation of soil metal pollution and plant recruitment near a copper smelter in Central Chile

Cited by 89 publications

References 13 publications

Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile

Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile

Thresholds of copper toxicity to lettuce in field-collected agricultural soils exposed to copper mining activities in Chile

Evaluation of Potential Methane Generation in the Investigation of an Abandoned Contaminated Landfill in Santiago, Chile

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