English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/153887
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
DC FieldValueLanguage
dc.contributor.authorSantos-Francés, Fernandoes_ES
dc.contributor.authorMartínez-Graña, Antonio Migueles_ES
dc.contributor.authorAlonso Rojo, Pilares_ES
dc.contributor.authorGarcía Sánchez, Antonioes_ES
dc.identifier.citationInternational Journal of Environmental Research and Public Health 14(8): 859 (2017)es_ES
dc.description22 páginas, 5 tablas y 6 figurases_ES
dc.description.abstractConcentrations of seven heavy metals (Cd, Cr, Cu, Hg, Ni, Pb, and Zn) and one metalloid (As) as well as various parameters (pH, organic carbon, granulometric analysis and cation exchange capacity) were analyzed in 77 soil samples collected in the mining areas of La Zanja and Colquirrumi (Department of Cajamarca) and Julcani (Department of Huancavelica). Our study proposed geochemical baseline values for heavy metals in a natural region (La Zanja) from samples collected during the period of the environmental impact study (2006), that is, from an earlier period which occurred at the beginning of the exploitation of the current gold mine. The baseline values obtained were as follows: 8.26 mg kg−1 for Cr; 56.97 mg kg−1 for Ni; 22, 20 mg kg−1 for the Cu; 47.42 mg kg−1 for Zn; 27.50 mg kg−1 for As; 4.36 mg kg−1 for Cd; 4.89 mg kg−1 for Hg, and 44.87 mg kg−1 for Pb. Through the use of different indices of heavy metal contamination (geo-accumulation index (Igeo), improved Nemerow index (IIN) and potential ecological risk index (RI)), the degree of pollution caused by mining activities in two areas, Colquirrumi and Julcani, which have a high density of mining sites in operation, was determined. The values obtained from these indices indicated that the Colquirrumi region was the most contaminated, followed by Julcani. The area of La Zanja, despite being free of mining operations, presented slight diffuse pollution. Several positive correlations were obtained, with a high level of significance, between pH, organic carbon content, cation exchange capacity, and the Cr, Pb and Ni concentrations of the soils. The spatial distribution of the heavy metals was realized by means of the interpolation method of ordinary kriging. The results obtained and the experience gained in this work were necessary to facilitate the identification of soil contamination processes in high altitude areas of the Andes Western Cordillera (Peru) as a basis for taking appropriate measures when restoring soils, during mine closure processes, and to protect the quality of soil resources.es_ES
dc.description.sponsorshipThis work has been supported by the Salamanca University (USAL) research projects CGL2012-37281-C02.01, CGL2015-67169-P and CGL2015-69919-R (MINECO-FEDER).es_ES
dc.publisherMultidisciplinary Digital Publishing Institutees_ES
dc.relation.isversionofPublisher's versiones_ES
dc.subjectPollution soiles_ES
dc.subjectHeavy metalses_ES
dc.subjectSpatial distributiones_ES
dc.subjectGeochemical backgroundes_ES
dc.subjectEnvironmental qualityes_ES
dc.subjectAndes Mountain Range of Perues_ES
dc.titleGeochemical background and baseline values determination and spatial distribution of heavy metal pollution in soils of the Andes Mountain Range (Cajamarca-Huancavelica, Peru)es_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderUniversidad de Salamancaes_ES
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)-
dc.contributor.funderMinisterio de Economía, Industria y Competitividad (España)es_ES
dc.contributor.funderEuropean Commissiones_ES
oprm.item.hasRevisionno ko 0 false*
Appears in Collections:(IRNASA) Artículos
Show simple item record

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.