Ion-chromatography of metals with post-column ion displacement |
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| Authors: | Bowles C J Bader L W Jackson K W |
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| Institution: | Department of Chemistry, University of Saskatchewan, Saskatoon, Sask. Canada S7N 0W0. |
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| Abstract: | A post-column reagent mixture of Eriochrome Black T and magnesium-EDTA complex is added to the eluent from an ion-chromatograph. Eluted metal cations displace the magnesium, which then forms a complex with the Eriochrome Black T. The absorbance of this complex is measured at 520 nm. Detection limits for several cations are in the mug/ml range. |
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