44 research outputs found
Disponibilidade e fracionamento de Cd, Pb, Cu e Zn em função do pH e tempo de incubação com o solo
Distribuição e formas de ocorrĂȘncia de zinco em solos no municĂpio de Vazante - MG
The effect of phytostabilization on Zn speciation in a dredged contaminated sediment using scanning electron microscopy, X-ray fluorescence, EXAFS spectroscopy, and principal components analysis
Assessment of metal along a contamination gradient in soils collected from industrial areas in Northern Tunisia
COMInternational audienceMany studies were interested in the assessment and the monitoring of soil contamination with heavy metals. The aim of this study was to evaluate the effects of emissions from the Tunisian Steel Company El Fouladh in Bizerte (Tunisia). In this context, we measured Zinc (Zn), Copper (Cu), Lead (Pb) and Cadmium (Cd) soilâs concentrations from 8 sites along a contamination gradient. Besides, physicochemical parameters, pH, organic carbon, CEC and CaCO3 were measured. Heavy metals were determined using an atomic absorption spectrome-try. The results revealed a high concentration of heavy metals in soils collected from several sites. The contamination factor (CF) was determined to estimate soil contamination of the sam-pling sites, and revealed that the level of contamination varied along a contamination gradient, which may be due to the mobility of pollution