Durães, N. and Bobos, I. and Ferreira da Silva, E. and Dekayir, A. (2015) Copper, zinc and lead biogeochemistry in aquatic and land plants from the Iberian Pyrite Belt (Portugal) and north of Morocco mining areas. Environmental Science and Pollution Research, 22 (3). pp. 2087-2105.

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Abstract

The ability of aquatic (Juncus effusus L., Scirpus holoschoenus L., Thypha latifolia L. and Juncus sp.) and land (Cistus ladanifer L., Erica andevalensis C.-R., Nerium oleander L., Isatis tinctoria L., Rosmarinus officinalis L., Cynodon dactylon L. and Hordeum murinum L.) plants from Portugal (Aljustrel, Lousal and São Domingos) and Morocco (Tighza and Zeida) mining areas to uptake, translocate and tolerate heavy metals (Cu, Zn and Pb) was evaluated. The soils (rhizosphere) of the first mining area are characterized by high acidity conditions (pH 2–5), whereas from the second area, by alkaline conditions (pH 7.0–8.5). Physicochemical parameters and mineralogy of the rhizosphere were determined from both areas. Chemical analysis of plants and the rhizosphere was carried out by inductively coupled plasma emission spectrometry. The sequential chemical extraction procedure was applied for rhizosphere samples collected from both mining areas. In the acid conditions, the aquatic plants show a high capacity for Zn bioaccumulation and translocation and less for Pb, reflecting the following metal mobility sequence: Zn > Cu > Pb. Kaolinite detected in the roots by infrared spectroscopy (IR) contributed to metal fixation (i.e. Cu), reducing its translocation to the aerial parts. Lead identified in the roots of land plants (e.g. E. andevalensis) was probably adsorbed by C–H functional groups identified by IR, being easily translocated to the aerial parts. It was found that aquatic plants are more efficient for phytostabilization than bioaccumulation. Lead is more bioavailable in the rhizosphere from Morocco mining areas due to scarcity of minerals with high adsorption ability, being absorbed and translocated by both aquatic and land plants. © 2014, Springer-Verlag Berlin Heidelberg.

Item Type: Article
Uncontrolled Keywords: acidity; adsorption; alkalinity; aquatic plant; bioaccumulation; bioavailability; biogeochemistry; chemical analysis; heavy metal; kaolinite; mineralogy; mining; physicochemical property; rhizosphere; stabilization; translocation, Iberian Pyrite Belt; Morocco, Cistus ladanifer; Cynodon dactylon; Embryophyta; Erica andevalensis; Hordeum murinum; Isatis tinctoria; Juncus; Juncus effusus; Nerium oleander; Rosmarinus officinalis; Scirpoides holoschoenus, copper; heavy metal; iron; lead; pyrite; soil pollutant; sulfide; zinc, aquatic species; bioremediation; chemistry; metabolism; mining; Morocco; movement (physiology); plant; plant root; Portugal; rhizosphere; soil pollutant; transport at the cellular level, Aquatic Organisms; Biodegradation, Environmental; Biological Transport; Copper; Iron; Lead; Metals, Heavy; Mining; Morocco; Movement; Plant Roots; Plants; Portugal; Rhizosphere; Soil Pollutants; Sulfides; Zinc
Subjects: Environmental Science
Divisions: SCIENTIFIC PRODUCTION > Environmental Science
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:47
URI: http://eprints.umi.ac.ma/id/eprint/3540

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