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Martínez-Sánchez MJ, Pérez-Sirvent C, Martínez-Lopez S, García-Lorenzo ML, Agudo I, Martínez-Martínez LB, Hernández-Pérez C, Bech J. Uptake of potentially toxic elements by edible plants in experimental mining Technosols: preliminary assessment. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:1649-1665. [PMID: 34676509 PMCID: PMC9033688 DOI: 10.1007/s10653-021-01091-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 09/03/2021] [Indexed: 05/19/2023]
Abstract
A study was carried out to evaluate the absorption of potentially toxic elements from mining Technosols by three types of vegetable plants (broccoli (Brassica oleracea var. italica), lettuce (Lactuca sativa) and onion (Allium cepa)), the different parts of which are intended for human and farm animal consumption (leaves, roots, edible parts). The preliminary results obtained highlight the importance of the design of the mining Technosols used for agricultural purposes, obtained from soils and sediments of mining origin and amended with residues of high calcium carbonate concentrations (limestone filler and construction and demolition wastes). The experiment was carried out in a greenhouse, and the total metal(loid)s concentration (As, Pb, Cd, Cu, Fe, Mn and Zn) of the soil, rhizosphere, aqueous leachates and plant samples was monitored, the translocation and bioconcentration factors (TF and BCF, respectively) being calculated. The characterization of the soils included a mobilization study in media simulating different environmental conditions that can affect these soils and predicting the differences in behavior of each Technosol. The results obtained showed that the levels of potentially toxic elements present in the cultivated species are within the range of values mentioned in the literature when they were cultivated in soils with calcareous amendments. However, when the plants were grown in contaminated soils, the potentially toxic elements levels varied greatly according to the species, being higher in onions than in lettuce. Experiments with the use of lime filler or construction and demolition wastes for soil remediation result in crops that, in principle, do not present health risks and are similar in development to those grown on non-contaminated soil.
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Affiliation(s)
- María José Martínez-Sánchez
- Department of Agricultural Chemistry, Geology and Pedology, International Excellence Campus "Mare Nostrum", University of Murcia, Murcia, Spain
| | - Carmen Pérez-Sirvent
- Department of Agricultural Chemistry, Geology and Pedology, International Excellence Campus "Mare Nostrum", University of Murcia, Murcia, Spain.
| | - Salvadora Martínez-Lopez
- Department of Agricultural Chemistry, Geology and Pedology, International Excellence Campus "Mare Nostrum", University of Murcia, Murcia, Spain
| | - Mari Luz García-Lorenzo
- Department of Petrology and Geochemistry, Faculty of Geology, Moncloa Campus of International Excellence, Complutense University of Madrid, Madrid, Spain
| | - Ines Agudo
- Department of Agricultural Chemistry, Geology and Pedology, International Excellence Campus "Mare Nostrum", University of Murcia, Murcia, Spain
| | - Lucia Belen Martínez-Martínez
- Department of Agricultural Chemistry, Geology and Pedology, International Excellence Campus "Mare Nostrum", University of Murcia, Murcia, Spain
| | - Carmen Hernández-Pérez
- Department of Agricultural Chemistry, Geology and Pedology, International Excellence Campus "Mare Nostrum", University of Murcia, Murcia, Spain
| | - Jaume Bech
- University of Barcelona, Barcelona, Spain
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Alorda-Kleinglass A, Garcia-Orellana J, Rodellas V, Cerdà-Domènech M, Tovar-Sánchez A, Diego-Feliu M, Trezzi G, Sánchez-Quilez D, Sanchez-Vidal A, Canals M. Remobilization of dissolved metals from a coastal mine tailing deposit driven by groundwater discharge and porewater exchange. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 688:1359-1372. [PMID: 31726565 DOI: 10.1016/j.scitotenv.2019.06.224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 06/10/2023]
Abstract
Mining impacts on coastal environments have been extensively studied around the world. However, the role of Submarine Groundwater Discharge (SGD) and Porewater Exchange (PEX) as pathways for pollutants from mining waste deposits into seawater has been largely overlooked. Portmán Bay is located in the Cartagena-La Unión Pb-Zn sulphur mining district in Murcia, SE of Spain. The disposal of about 60 million tons of metal-rich mine tailings from 1957 to 1990 led to the infill of most of the bay. Although the effects of metals on indicator organisms have been shown previously, there is a major lack of knowledge on the release of dissolved metals from the emerged tailing deposit into the sea, more than 25 years after the closure of the mining activities. Samples for Ra isotopes (223Ra, 224Ra, 226Ra and 228Ra) and dissolved metals (Ag, Cd, Co, Pb, Zn) were analyzed in porewaters and seawater in order to separately estimate SGD and PEX driven dissolved metal fluxes. Our results show a continuous release of dissolved metals into the sea driven by both PEX and SGD. Most of dissolved metals are remobilized and released into the water column by PEX, which is a ubiquitous mechanism acting along the shoreline. Although SGD only represents 13% of the water flow, it drives large fluxes of dissolved Fe into the sea, mainly restricted to the west side of the bay. Large inputs of dissolved Fe2+ from the anoxic tailings deposit trigger a massive precipitation of iron hydroxides that enables the removal of most dissolved metals from the water column. This study highlights the role of PEX and SGD as significant mechanisms for the land to ocean transfer of dissolved metals from coastal mine tailings deposits.
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Affiliation(s)
- Aaron Alorda-Kleinglass
- Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain.
| | - Jordi Garcia-Orellana
- Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain; Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain.
| | - Valentí Rodellas
- Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain
| | - Marc Cerdà-Domènech
- CRG Marine Geosciences, Department of Earth and Ocean Dynamics, Faculty of Earth Sciences, University of Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Antonio Tovar-Sánchez
- Instituto de Ciencias Marinas de Andalucía (ICMAN, CSIC), Campus Universitario Río San Pedro, 11510 Puerto Real, Cádiz, Spain
| | - Marc Diego-Feliu
- Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain
| | - Giada Trezzi
- Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Catalonia, Spain
| | - David Sánchez-Quilez
- Instituto de Ciencias Marinas de Andalucía (ICMAN, CSIC), Campus Universitario Río San Pedro, 11510 Puerto Real, Cádiz, Spain
| | - Anna Sanchez-Vidal
- CRG Marine Geosciences, Department of Earth and Ocean Dynamics, Faculty of Earth Sciences, University of Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Miquel Canals
- CRG Marine Geosciences, Department of Earth and Ocean Dynamics, Faculty of Earth Sciences, University of Barcelona, 08028 Barcelona, Catalonia, Spain
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