Accumulation of Cr, Pb, Cu, Ni, Zn and Cd in soil following irrigation with treated urban effluent in Australia

agua de riego aguas residuales application methods australia australie cadmio cadmium chrome chromium cinc cobre copper cromo cuivre desechos eau d'irrigation effluents heavy metals irrigation irrigation water lead metales pesados nickel plomb plomo riego soil sol suelo wastes wastewater zinc