Abstract
Soils of the rice crop region located Southeast from the city of Valencia, Spain, are irrigated with water from the Favara Channel water, which carries residual wastewater spills to the Turia river. In these soils, the total average concentration of heavy metals (Cd, Cr, Cu, Fe, Mo, Mn, Ni, Pb and Zn) was determined and their relation to soil physical and chemical properties was analyzed by multivariant statistical analysis. Soils were characterized by conventional analytical methods. The results showed (hat the soils have a high cation exchange ability, considerable organic fraction and alkaline pH. The total heavy metals average concentration showed the sequence Fe>Mn>Zn>Cu>Cr>Pb>Ni≫Mo>Cd. The statistical analysis showed clear correlations between clay, organic matter, pH, EC, loam, Fe and Mn, and the total heavy metals average concentration, The total concentration in soil of Zn, Pb, Cr, Ni, Mo and CM, and the concentration of Cd, Cr, Cu, Pb, Mo, Mn and Ni in irrigation waters are above the limits established for their evaluation, revealing in both cases potential toxicity risks in the rice crop.
| Translated title of the contribution | Statistical relation between heavy metals and properties of soils irrigated with waste water |
|---|---|
| Original language | Spanish |
| Pages (from-to) | 281-286+247 |
| Journal | Interciencia |
| Volume | 28 |
| Issue number | 5 |
| State | Published - May 2003 |
| Externally published | Yes |