Determination of oxalate in alumina process liquors by ion chromatography with post column chemiluminescence detection
Date
1995
Authors
Barnett, N.W.
Bowser, T.A.
Russell, R.A.
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Analytical Proceedings, 1995; 32(2):57-59
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Neil W. Barnett, Tim A. Bowser and Richard A. Russell
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Abstract
The analysis of oxalate in Bayer liquor had been successfully demonstrated using a combination of ion-exchange chromatography and post-column detection based on a chemiluminescence reaction with tris(2-2′bipyridyl)ruthenium(III). Common interferences, including other dicarboxylic acids and inorganic anions, have been shown to elicit no significant response. The chemiluminescence response is linear and a detection limit of 10–7 mol l–1 possible. The potential use of this method for other complex samples is presented. Chromatographic conditions provide a rapid analysis with sample analysis possible every 5–8 min.
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