Heavy metal contents in soils and native flora inventory at mining environmental liabilities in the Peruvian Andes
| Autor: | Esperança Tauler, Joanna Szpunar, Edith Cruzado-Tafur, Katarzyna Bierla, Lisard Torró |
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| Přispěvatelé: | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Pontifical Catholic University of Peru, Universitat de Barcelona (UB) |
| Rok vydání: | 2021 |
| Předmět: |
010506 paleontology
Soil test Cajamarca Contamination indices engineering.material 010502 geochemistry & geophysics 01 natural sciences [CHIM.ANAL]Chemical Sciences/Analytical chemistry Jarosite Subsoil 0105 earth and related environmental sciences Earth-Surface Processes Topsoil Geology Native plants [CHIM.MATE]Chemical Sciences/Material chemistry 15. Life on land Peruvian Andes Soil pollution Soil contamination 6. Clean water [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry Phytoremediation [CHIM.POLY]Chemical Sciences/Polymers 13. Climate action Environmental chemistry Illite Soil water engineering Ecological risk |
| Zdroj: | Journal of South American Earth Sciences Journal of South American Earth Sciences, Elsevier, 2021, 106, pp.103107. ⟨10.1016/j.jsames.2020.103107⟩ |
| ISSN: | 0895-9811 |
| DOI: | 10.1016/j.jsames.2020.103107 |
| Popis: | International audience; Inadequate waste management in Mining Environmental Liabilities (MEL) represents a risk for the environment and human health and generates social problems. The aim of this article is twofold: i) to evaluate the environmental quality of soils from a geo-ecological perspective; and ii) to inventory native flora around two MEL in the Hualgayoc district in the Peruvian Andes. Soil samples collected for topsoil (upper 30 cm; i.e., soil arable layer) and subsoil (30–60 cm) were classified as Gleyic Cambisols and showed extremely acid pH (3.50–4.19 in site #1 and 2.74–4.02 in site #2). The mineralogical composition of soils is dominated by illite, kaolinite, quartz, and jarosite. The concentrations of six potentially toxic elements (Pb, Zn, As, Cu, Ag, and Cd) were determined. High concentrations of Pb (4683 mg kg−1), Zn (724.2 mg kg−1), Cu (511.6 mg kg−1), Ag (33.4 mg kg−1), and As (3611 mg kg−1) exceeded the maximum permissible limits for agricultural soils according to Peruvian and Canadian regulations. Applied geochemical indexes classified some of the soils as extremely polluted and therefore the studied MEL represent a very high ecological risk. Twenty-two species of native flora belonging to 12 family species were inventoried in such contaminated sites thus having the potential to be used for phytoremediation purposes. |
| Databáze: | OpenAIRE |
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