title: Differentiation of Al3+ and Al species in environmental samples by isotachophoresis.
abstract: An isotachophoretic method for the determination of free [Al(H2O)6]3+ ions in different aluminium salt solutions was developed. The electrolyte system consists of 0.01 M sodium acetate (leading system) and 0.01 M tris(hydroxymethyl)amino-methane (terminating system). Separation was effected with a precapillary tube (diameter 0.05 cm) followed by a main capillary tube of length 20 cm and of smaller cross-section. The detection limit for [Al(H2O)6]3+ ions was 0.05 mg/l. The method was applied to the determination of free Al3+ ions ([Al(H2O)6]3+) in soil leachates and aqueous soil extracts.
authors.affiliation: Fraunhofer-Institut für Umweltchemie, Schmallenberg, F.R.G.
authors.forename: S
authors.initials: S
authors.lastname: Schmid
authors.forename: W
authors.initials: W
authors.lastname: Kördel
authors.forename: H
authors.initials: H
authors.lastname: Klöppel
authors.forename: W
authors.initials: W
authors.lastname: Klein
mesh_terms: D015258:Acid Rain; D000535:Aluminum / Q000032:analysis*; D002412:Cations / Q000032:analysis*; D004586:Electrophoresis; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D015258:Acid Rain; D002412:Cations; D012989:Soil Pollutants; D000535:Aluminum