Abstract
Procedures were developed for the speciation of trace amounts of aluminium present in percolating water of forest soil by online coupling of different chromatographic separation methods to an ICP-MS detection system. Inorganic and organic aluminium species were fractionated on a cation exchange column IONPAC CG12 (10-32). Phytotoxic polymeric aluminium hydroxides, as e.g. Al13 (AlO4Al12(OH)24(H2O)12 7+), were determined using pyrocatechol violet (PCV) as a species dependant complexing reagent prior to the cation exchange step. Size fractionation of the organic aluminium species was obtained by size exclusion chromatography using the columns Superdex-75-HR 10/30 and Superdex-Peptide-HR 10/30. Validation of the speciation procedures proved that online coupling HPLC to the element selective and sensitive ICP-MS detection system leads to low detection limits of 0.3–0.6 μg/L and high precision and reproducibility (1.2–3.5%) of the speciation procedures. Speciation data determined for aluminium in a percolating water of the Zierenberg catchment are given.
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Received: 20 November 1998 / Revised: 28 January 1999 / Accepted: 3 February 1999
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Hils, A., Grote, M., Janßen, E. et al. Speciation of trace amounts of aluminium in percolating water of forest soil by online coupling HPLC-ICP-MS. Fresenius J Anal Chem 364, 457–461 (1999). https://doi.org/10.1007/s002160051367
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DOI: https://doi.org/10.1007/s002160051367