Exploring element accumulation patterns of a metal excluder plant naturally colonizing a highly contaminated soil

Assessing the ecotoxicological effects of long-term contaminated mine soils on plants and earthworms: relevance of soil (total and available) and body concentrations

“…The available concentrations of As, Zn, and Cu were very low, ranging from 0.18, 0.79, and 0.03 mg kg -1 to 8.4, 172, and 21.1 mg kg -1 , respectively. These levels were less than 1% of the total soil concentrations, similarly to results obtained by Pignattelli et al (2012) in mining sites. However, some exceptions existed, e.g., the non-diluted samples of soils 2 and 4 exhibited Zn percentages that reached 8% and 6%, respectively, and the non-diluted soil 2 presented a ratio of available to total Cu concentration of 4%.…”

“…Some studies revealed a dependence of the metal burden on worms (Peijnenburg, 1999;Janssen, 1997) and plants (Smith et al, 2012) with the total concentrations, whereas others (García-Salgado et al, 2012) found a dependence on the extractable concentrations. Pignattelli (2012) found a correlation between the As content in plants with the total and available concentrations, whereas the Zn and Cu accumulation was irrespective of both external concentrations.…”

“…The small range of available Cu concentrations, which was lower than that obtained for As and Zn, could explain the low power of the relationships found for all regressions. Pignattelli et al (2012) also found differences in the influence of the available and total concentrations on the plant accumulation between As and metals (e.g., Zn and Cu), which was attributed to the difference in the uptake mechanisms of arsenate (phosphate transporters) and metals.…”

Influence of Soil Chemistry and Plant Physiology in the Phytoremediation of Cu, Mn, and Zn

“…Phytostabilization, another phytotechnology, uses plants to stabilize pollutants in soil, preventing erosion, leaching or runoff, or by converting pollutants to less bioavailable forms. In this process, plants act as a ground cover, reducing animal contact with contaminants present in soil (Dasgupta-Schubert et al, 2011;Pignattelli et al, 2012;Van Nevel et al, 2011).…”

“…This environmentally friendly and lowcost technology can be used to decontaminate soils, water and sediments containing organic compounds and/or metals (Gerhardt et al, 2009;Kramer, 2010). There is a great interest in applying phytoremediation to agriculture as well as to military and industrial fields that present contamination problems (Andreazza et al, 2011;Mackie et al, 2012;Panz and Miksch, 2012;Pignattelli et al, 2012;Testiati et al, 2013). Polluted waters that can be phytoremediated include sewage and municipal wastewater, agricultural runoff/drainage water, industrial waste water, landfill leachate and mine drainage (Agunbiade et al, 2009;Anning et al, 2013;Boojar and Tavakkoli, 2011;Vaseem and Banerjee, 2012).…”