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Mobility of trace metals in serpentinite-derived soils of the Pollino Massif (southern Italy); insights on bioavailability and toxicity

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doi: 10.1007/s10653-019-00497-y
Authors:Summa, Vito; Boccia, Priscilla; Lettino, Antonio; Margiotta, Salvatore; Palma, Achille; Ragone, Pietro P.; Sinisi, Rosa; Zanellato, Miriam; Sturchio, Elena
Author Affiliations:Primary:
National Research Council, Institute of Methodologies for Environmental Analysis, Tito Scalo, Italy
Italian Workers' Compensation Authority (INAIL), Department of Technological Innovation and Safety of Plants, Product and Anthropic Settlements, Rome, Italy
Agenzia regionale per la Protezione dell'Ambiente della Basilicata (ARPAB), Bernalda, Italy
Volume Title:Environmental Geochemistry and Health
Source:Environmental Geochemistry and Health, 42(7), p.2215-2232. Publisher: Springer, London, United Kingdom. ISSN: 0269-4042
Publication Date:2020
Note:In English. 74 refs.; illus., incl. 5 tables, geol. sketch map
Summary:This paper deals with the evaluation of geo- and bioavailability of trace elements, including heavy metals, present in a typical serpentinite-derived soil of the Pollino Massif (Southern Italy). Precisely, the research was aimed to (1) assess processes and factors controlling the mobility of metals in the soil in order to identify the elements "potentially harmful" for the human health, (2) estimate possible metals accumulation in horticultural crops, and (3) evaluate phyto- and genotoxicity of Cr naturally present in soils and water. The studied profile has a homogeneous mineralogical composition consisting of metal-rich phases as prevailing minerals. The three-step sequential extraction was performed on soil samples from which four fractions (exchangeable, reducible, oxidizable, and residual) were obtained and analysed by ICP-MS. The lowest contents of metals are in the exchangeable and oxidizable fractions suggesting a metal contamination is unlikely for the studied soil. Conversely, the residual and reducible fractions are the more metal enriched fractions. Among heavy metals, mainly Pb and Cd and subordinately Ni, Cr, Cu, and Zn are associated with Fe- and Mn-oxi/hydroxides that, under acidic conditions, may release the adsorbed metals in circulating water. The high contents of heavy metals, including Cr and Ni, of analysed vegetables suggest a metal transfer from soil to plant. However, no significant effects on Vicia faba seeds were observed by in vivo phyto- and genotoxicity tests. Conversely in vitro genotoxicity tests, performed on HepG2 human cell line, showed that DNA damage and cytotoxic effect depending on Cr concentration may occur.
Subjects:Agriculture; Aluminum; Bioavailability; Cadmium; Chromium; Copper; Geochemistry; Heavy metals; Iron; Lead; Manganese; Metaigneous rocks; Metals; Metamorphic rocks; Metasomatic rocks; Mobilization; Nickel; Parent materials; Public health; Serpentinite; Silicon; Soil profiles; Soils; Titanium; Toxicity; Trace elements; Zinc; Apennines; Basilicata Italy; Europe; Italy; Southern Apennines; Southern Europe; Genotoxicity; Phytotoxicity; Pollino Massif; Southern Italy
Coordinates:N400000 N403000 E0164000 E0154000
Record ID:885933-26
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany
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