Uptake of potentially toxic elements by edible plants in experimental mining Technosols: preliminary assessment



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Martínez Sánchez, Maria José and Pérez Sirvent, Carmen and Martínez Lopez, Salvadora and García Lorenzo, Mari Luz and Agudo, Inés and Martínez Martínez, Lucía Belén and Hernández Pérez, Carmen and Bech, Jaume (2021) Uptake of potentially toxic elements by edible plants in experimental mining Technosols: preliminary assessment. Environmental Geochemistry and Health . ISSN 0269-4042

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Official URL: https://doi.org/10.1007/s10653-021-01091-x


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.

Item Type:Article
Additional Information:

CRUE-CSIC (Acuerdos Transformativos 2021)

Uncontrolled Keywords:Plant uptake, Metal(loid)s, Arsenic, Technosols, Soil remediation
Subjects:Sciences > Geology > Soil science
ID Code:69670
Deposited On:19 Jan 2022 16:41
Last Modified:18 Feb 2022 09:52

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