Distribution of Zinc, Manganese, Copper, Cobalt, and Nickel in Andosols Profiles

Geochemical behaviour of Ni, Cr, Cu, Zn and Pb in an Andosol–Cambisol climosequence on basaltic rocks in the French Massif Central

“…Comparing the six studied pedons all together, Cu and Zn content variations are linked to organic matter contents variations, which corresponds to the high complexing potential already reported for these trace elements (Rahman et al, 1996(Rahman et al, , 1998Fujikawa et al, 2000;Latrille et al, 2003;Martinez Cortizas et al, 2003). Regarding the vertical distributions, EF(Cu) and EF(Al) present the same trends in all pedons.…”

Tephra stratification of volcanic ash soils in Northern Ecuador

“…Vanadium occurs in titaniferrous magnetite and hematite and is often sorbed onto iron oxides (Adriano, 2001). Similarly, cobalt is often associated with iron oxides (Adriano, 2001), although it is also influenced by biocycling (Rahman et al, 1996). The addition of SiO 2 o to this group is unexpected, but SiO 2 o did still show positive correlations to group III, related to the formation of allophane.…”

“…During fractional crystallisation, Sr tends to concentrate in plagioclase and hornblende (Deer et al, 1993). The correlations with ZnO are less pronounced, probably because the vertical distribution of ZnO is differentially influenced by biocycling; being immobilized in SOM complexes in surface horizons while being leached from (buried) subsurface horizons (Rahman et al, 1996). The absence of a correlation with Al 2 O 3 t for all group II elements indicates that these elements behaved opposingly during weathering, with Al remaining immobile while Na, Ca, Sr and Zn were leached.…”

Potential for phytoextraction of copper, lead, and zinc by rice (Oryza sativa L.), soybean (Glycine max [L.] Merr.), and maize (Zea mays L.)

“…The Zn concentrations extracted by the 0.1 mol L −1 HCl were higher than those by the DTPA in both soils. The concentrations of Zn [35], and Cu, Pb, and Zn [36] in several soils extracted by the 0.1 mol L −1 HCl were higher than those by the DTPA. The 0.1 mol L −1 HCl solution dissolved various oxides of metals adsorbed on to soil colloids [35,37].…”