Analytical Techniques for Investigating Terrestrial Geochemical Sediments

Selectivity of Ammonium Acetate, Hydroxylamine Hydrochloride, and Oxalate/Ascorbic Acid Solutions for the Speciation of Fe, Mn, Zn, Cu, Ni, and Al in Early Tertiary Paleosols

“…This solution has been used in more recent soils and sediments to extract elements from the crystalline Fe phases (31). The extraction pattern for these samples shows a dramatic increase in adsorption of these elements.…”

“…Separate air-dried (30 -35°C) subsamples were screened through a 63-m sieve and pretreated for XRD analysis using powder and fractionation techniques (5,30,31).…”

Speciation of Zinc

“…Samples from different early Tertiary paleosols were extracted using a selective dissolution procedure. The specificity of each extracting solution for the different adsorption components was examined and the most important phases for the dispersion of Zn, Cu, and other metals were identified [20]. The trace-metal speciation was determined in two standard reference soils by using the Commission of European Communities Bureau of Reference (BCR) sequential extraction procedure.…”