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The characterization of the content of trace metals in soils is an instrument inmany programs of environmental protection, including the establishment of regional-levelstandards to detect sites affected by contamination. The objectives of the present studywere to study the available levels of Cd, Cr, Cu, Ni, Pb, and Zn in surface horizons ofagricultural soils in a typical European Mediterranean region, to establish the geochemical baseline concentration (GBC), background level (BL), and reference value (RV) of each ofthese available metals, and to investigate their possible correlations with soil properties.To establish the GBC and RV values, we used the “standard threshold method”. Topsoilsamples (0–20 cm) were collected from 630 sites, and extracted with Diethylene TriaminePentaacetic Acid (DTPA) to determine their available heavy metal concentrations. TheGBC values established were: 0.04 to 0.90 mg kg−1, 0.70 to 2.50 mg kg−1, 0.10 to6.30 mg kg−1, 0.30 to 7.90 mg kg−1, 0.29 to 4.50 mg kg−1, and 0.18 to 2.50 mg kg−1 for Cd,Cr, Cu, Ni, Pb, and Zn, respectively. Soil properties were found to be correlated with theavailable heavy metal content, suggesting that the enhanced mobility of heavy metals arerelated to anthropic activities

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Concentrations of Available Heavy Metals in Mediterranean Agricultural Soils and their Relation with Some Soil Selected Properties: A Case Study in Typical Mediterranean Soils