Gas chromatography of metal chelates with carrier gas containing ligand vapour

Add time:08/04/2019    Source:sciencedirect.com

When the conventional gas Chromatographic method with helium as carrier gas is used, thorium(IV) trifluoroacetylacetonate shows an anomalous peak and the chelate is not eluted quantitatively. But, by using trifluoroacetylacetone vapour as a carrier-gas additive, the anomalous peak can be improved. The technique of using a carrier gas containing ligand vapour was studied fundamentally, and was found to be extremely useful in obtaining more reliable Chromatographic peaks than those obtained in the absence of ligand vapour. The proposed method furnishes similar quantitative results in the determinations of uranium(IV) and iron(III), as their trifluoroacetylacetonates, and aluminium(III), chromium(III), iron(III) and thorium(IV) as their acetylacetonates.

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