Differentiation of Al3+ and Al species in environmental samples by isotachophoresis.
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.
Schmid
S
S
Fraunhofer-Institut für Umweltchemie, Schmallenberg, F.R.G.
Kördel
W
W
Klöppel
H
H
Klein
W
W
D015258:Acid Rain; D000535:Aluminum / Q000032:analysis*; D002412:Cations / Q000032:analysis*; D004586:Electrophoresis; D012989:Soil Pollutants / Q000032:analysis*
D015258:Acid Rain; D002412:Cations; D012989:Soil Pollutants; D000535:Aluminum