Universidad Peruana Cayetano Heredia

Accumulation of heavy metals in native Andean plants: potential tools for soil phytoremediation in Ancash (Peru)

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dc.contributor.author Chang Kee, Jose
dc.contributor.author Gonzales, Maria J.
dc.contributor.author Ponce, Olga
dc.contributor.author Ramirez, Lorena
dc.contributor.author Leon, Vladimir
dc.contributor.author Torres, Adelia
dc.contributor.author Corpus, Melissa
dc.contributor.author Loayza Muro, Raul Augusto
dc.date.accessioned 2019-03-05T15:23:27Z
dc.date.available 2019-03-05T15:23:27Z
dc.date.issued 2018
dc.identifier.uri https://hdl.handle.net/20.500.12866/5875
dc.description.abstract Metal contamination is a recurring problem in Peru, caused mainly by mine tailings from a past active mining activity. The Ancash region has the largest number of environmental liabilities, which mobilizes high levels of metals and acid drainages into soils and freshwater sources, posing a standing risk on human and environmental health. Native plant species spontaneously growing on naturally acidified soils and acid mine tailings show a unique tolerance to high metal concentrations and are thus potential candidates for soil phytoremediation. However, little is known about their propagation capacity and metal accumulation under controlled conditions. In this study, we aimed at characterizing nine native plant species, previously identified as potential hyperaccumulators, from areas impacted by mine tailings in the Ancash region. Plants were grown on mine soils under greenhouse conditions during 5 months, after which the concentration of Cd, Cu, Ni, Pb, and Zn was analyzed in roots, shoots, and soils. The bioaccumulation (BAF) and translocation factor (TF) were calculated to determine the amount of each metal accumulated in the roots and shoots and to identify which species could be better suited for phytoremediation purposes. Soil samples contained high Cd (6.50-49.80 mg/kg), Cu (159.50-1187.00 mg/kg), Ni (3.50-8.70 mg/kg), Pb (1707.00-4243.00 mg/kg), and Zn (909.00-7100.00 mg/kg) concentrations exceeding national environmental quality standards. After exposure to mine tailings, concentrations of metals in shoots were highest in Werneria nubigena (Cd, 16.68 mg/kg; Cu, 41.36 mg/kg; Ni, 26.85 mg/kg; Zn, 1691.03 mg/kg), Pennisetum clandestinum (Pb, 236.86 mg/kg), and Medicago lupulina (Zn, 1078.10 mg/kg). Metal concentrations in the roots were highest in Juncus bufonius (Cd, 34.34 mg/kg; Cu, 251.07 mg/kg; Ni, 6.60 mg/kg; Pb, 718.44 mg/kg) and M. lupulina (Zn, 2415.73 mg/kg). The greatest BAF was calculated for W. nubigena (Cd, 1.92; Cu, 1.20; Ni, 6.50; Zn, 3.50) and J. bufonius (Ni, 3.02; Zn, 1.30); BCF for Calamagrostis recta (Cd, 1.09; Cu, 1.80; Ni, 1.09), J. bufonius (Cd, 3.91; Cu, 1.79; Ni, 18.36), and Achyrocline alata (Ni, 137; Zn, 1.85); and TF for W. nubigena (Cd, 2.36; Cu, 1.70; Ni, 2.42; Pb, 1.17; Zn, 1.43), A. alata (Cd, 1.14; Pb, 1.94), J. bufonius (Ni, 2.72; Zn, 1.63), and P. clandestinum (Zn, 1.14). Our results suggest that these plant species have a great potential for soil phytoremediation, given their capability to accumulate and transfer metals and their tolerance to highly metal-polluted environments in the Andean region. en_US
dc.language.iso eng
dc.publisher Springer
dc.relation.ispartofseries Environmental Science and Pollution Research
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Peru en_US
dc.subject Andes en_US
dc.subject Metals en_US
dc.subject Mine tailings en_US
dc.subject Native plant species en_US
dc.subject Phytoremediation en_US
dc.subject Mining en_US
dc.subject Biodegradation, Environmental en_US
dc.subject Environmental Restoration and Remediation/methods en_US
dc.subject Metals, Heavy/analysis/pharmacokinetics en_US
dc.subject Plant Roots/chemistry/drug effects/metabolism en_US
dc.subject Plant Shoots/drug effects/metabolism en_US
dc.subject Plants/drug effects/metabolism en_US
dc.subject Soil Pollutants/analysis/pharmacokinetics en_US
dc.title Accumulation of heavy metals in native Andean plants: potential tools for soil phytoremediation in Ancash (Peru) en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1007/s11356-018-3325-z
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.05.08
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.03.05
dc.relation.issn 1614-7499


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