Pinus halepensis in Contaminated Mining Sites: Study of the Transfer of Metals in the Plant–Soil System Using the BCR Procedure
Metadatos
Mostrar el registro completo del ítemAutor
Kharazian, Pegah; Fernández Ondoño, Emilia; Jiménez Morales, María Noelia; Sierra Aragón, Manuel; Aguirre Arcos, AntonioEditorial
MDPI
Materia
Mine tailing BCR sequential extraction Phytoremediation Phytostabilization Pinus halepensis Geochemical characteristics
Fecha
2022-11-26Referencia bibliográfica
Kharazian, P... [et al.]. Pinus halepensis in Contaminated Mining Sites: Study of the Transfer of Metals in the Plant–Soil System Using the BCR Procedure. Toxics 2022, 10, 728. [https://doi.org/10.3390/toxics10120728]
Patrocinador
University of CagliariResumen
The study aimed at evaluating the geochemical fractions of Zn, Pb, Cd and their bioavailability
in soil in-depth and around the root of Pinus halepensis grown on heavily contaminated mine
tailing in south-western Sardinia, Italy. The contaminated substrates were partly investigated in a
previous study and are composed of pyrite, dolomite, calcite, quartz, gypsum, barite, iron-sulfate and
iron-oxide. The geochemical fractions and bioavailability of Zn, Pb and Cd were measured through
the BCR extractions method. Cadmium in the superficial contaminated substrates was mainly found
in the exchangeable BCR fraction. Zinc and lead were often found in the residual BCR fraction. PCA
confirmed that the uppermost alkaline-calcareous layers of mine waste were different with respect to
the deeper acidic layers. We demonstrated that Pb and Zn were less present in the exchangeable form
around the roots of P. halepensis and in soil depth. This can be due to uptake or other beneficial effect
of rhizospheres interaction processes. Further studies will shed light to confirm if P. halepensis is a
good candidate to apply phytostabilization in mine tailing.