In the present work, we focused on soils contaminated with elevated lead concentrations in an agricultural and
residential area surrounding a lead smelter plant in Bouwer, province of Córdoba, Argentina. The aim of this
research work was to assess the phytoextraction suitability of native plant species growing in the vicinity of a
former lead smelter.
The lead concentration in leaves, stems and roots was determined in ten species collected at ten sampling
sites along a lead concentration gradient in soil. It was found that at circa 1600 μg g−1 Pb HCl 0.5 M extractable
concentration in soil two native species, Tagetes minuta L. and Bidens pilosa L. accumulated high values of
Pb concentration in leaves (380.5 μg g−1 DW and 100.6 μg g−1 DW, respectively). Therefore, T. minuta L. and
B. pilosa L. have a considerable phytoremediation potential for lead polluted soils. At the same sampling site,
Sorghum halepense (L.) Pers., a non-native species, only bioconcentrate lead in roots (1406.8 μg g−1 DW)
showing a phytostabilization potential. The results of this study should be further developed in order to confirm
the potential use of these species in soil remediation programs.