Abstract
The contents of Pb, Cd, Zn, Cu, Cr, Ni, Mn, Co, Fe and Mg have been determined by A.A.S. at two depth levels in 27 samples of soils from industrial, urban and rural points of Biscay, Spain. Some soil parameters were also measured. By using a multiple linear regression technique for data discussion it was possible to suggest the main mechanisms of heavy metals distribution in soils. Some of them, dependent on Fe content, are probably re-precipitated as hydroxides. Other metals, in connection with CO2 amount, are likely converted into carbonates. A third type of metals, related to C.E.C., seems to be fixed as organic complexes. Cu, Zn and Pb remain partially as insoluble compounds.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
