Health & Environmental Research Online (HERO)


Print Feedback Export to File
1922075 
Journal Article 
Long-term transformations and redistribution of potentially toxic heavy metals in arid-zone soils incubated: I. Under saturated conditions 
Han, F; Banin, A 
1997 
1 
Water, Air, and Soil Pollution
ISSN: 0049-6979
EISSN: 1573-2932 
KLUWER ACADEMIC PUBL 
DORDRECHT 
95 
1-4 
399-423 
English 
WOS:A1997WV50700026 
has erratum 1881448 Correction of PREVIEWS 99558274. Long-term transformations and redistribution of potentially toxic heavy metals in arid-zone soils: I. Incubated under saturated conditions. Correction of title from. Erratum published in Water Air and Soil Pollution Vol. 96. Iss. 1-4. 1997. p. 367
BIOSIS COPYRIGHT: BIOL ABS. Solid-phase transformations of Cd, Cu, Cr, Ni and Zn, added as soluble salts at several levels to two arid-zone soils, were studied over a period of one year. The soils were maintained under a saturated-paste regime and sampled periodically. A selective sequential dissolution procedure was employed to determine the changes in metal distribution among six operationally defined solid-phase fractions. A function, Uts was introduced to measure the fractional attainment of equilibrium of the soils following a perturbation. The direction and rate of redistribution of the added metals in the soils were affected by the nature of the metal, the soil properties and the metal loading level. Cd added to the soils was transferred from the exchangeable (EXC) into the carbonate (CARB) fraction. When soluble Cu, Cr, Ni and Zn were added at low loading levels, metals were transferred from the reducible oxides(RO) bound and easily reducible oxides (ERO) bound fractions and the EXC fracti 
fractionation; redistribution; saturation; kinetics; heavy metals