Ion chromatographic determination of trace amounts of aluminium with on-line preconcentration and spectrophotometric detection |
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Authors: | Andrea Tapparo GGiorgio Bombi |
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Institution: | Dipartimento di Chimica Inorganica, Metallorganica e Analitica dell''Università di Padova, via Marzolo 1, 35131 Padova Italy |
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Abstract: | Trace amounts of aluminium in aqueous samples can be determined by ion chromatography using ammonium sulphate-nitric acid as eluent and pyrocatechol violet as post-column chromogenic reagent. The detection limit for a 50-μl sample is 10 μg 1?1. Preconcentration of the sample (obtained by replacing the sampling loop with a short ion-exchange column) allows larger amounts of sample to be loaded and lowers the detection limit below 1 μg 1?1. |
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Keywords: | Aluminium Preconcentration |
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