Flow procedure for ion-exchange preconcentration and on-line spectrophotometric determination of iron(III) as its thiocyanate complex |
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Authors: | Ala'ddin M Almuaibed and Alan Townshend |
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Institution: | (1) School of Chemistry, University of Hull, HU6 7RX Hull, UK |
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Abstract: | On-line ion-exchange preconcentration of iron(III) on a conventional cation exchange resin with spectrophotometric detection based on thiocyanate complexation is described. The calibration graph is linear over the range 0.01–0.2 g ml–1 and the detection limit (3 ) is 6 ng ml–1 for a 6-ml sample. No interference effects were detected. The recovery of iron from the resin is 95%. 12 samples h–1 can be analysed. |
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