title: The determination of the extractability of selected elements from agricultural soil.
abstract: Concentrations of Ag, Al, Ba, Cd, Co, Cr, Cu, Fe, K, Mn, Na, Ni, Pb, Sr, and Zn-isolated by sequential extraction steps from apple orchard soil-were analyzed by inductively coupled plasma-atomic emission spectroscopy and compared to the total amount of metal in soil determined by XRF. The extractable amount of each metal was calculated by the extraction yields of the four steps. The LODs of the different elements in all extracts ware below 3 μg/L except for Ba (steps 1 and 2), Cu (step 1), Fe (all steps), K (steps 1-3), Mn (step 2), Na (steps 1-3), Ni (step 1), Pb (steps 1 and 4), and Zn (steps 1 and 2). The highest LOD (>10 μg/L) was found for Fe, K, and Na (step 1). The recovery of all metals after four sequential extraction steps was 90-112%. The repeatability (<1.1%), the intermediate precision (<5.3%), the day-to-day reproducibility (<6.2%), and the overall uncertainty of measurement (approximately 4-8.5%) for all analyzed metals supports the choice of the method used.
authors.affiliation: Division of Analytical Chemistry, Department of Chemistry, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria.
authors.forename: Michaela
authors.initials: M
authors.lastname: Zeiner
authors.forename: Iva Juranović
authors.initials: IJ
authors.lastname: Cindrić
authors.forename: Ivanka Lovrenčić
authors.initials: IL
authors.lastname: Mikelić
authors.forename: Gordana
authors.initials: G
authors.lastname: Medunić
authors.forename: Štefica
authors.initials: Š
authors.lastname: Kampić
authors.forename: Nenad
authors.initials: N
authors.lastname: Tomašić
authors.forename: Gerhard
authors.initials: G
authors.lastname: Stingeder
mesh_terms: D000383:Agriculture; D005591:Chemical Fractionation / Q000379:methods; D004784:Environmental Monitoring / Q000379:methods*; D008670:Metals / Q000032:analysis; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis* / Q000737:chemistry; D013054:Spectrophotometry, Atomic
chemical_list: D008670:Metals; D012987:Soil; D012989:Soil Pollutants