Separation of metal-containing compounds by supercritical fluid chromatography
作者： Mehdi. Ashraf-Khorassani , John W. Hellgeth , Larry T. Taylor
DOI: 10.1021/AC00144A016
关键词: Phase (matter) 、 Supercritical fluid chromatography 、 Adsorption 、 Inorganic chemistry 、 Chemistry 、 Analytical chemistry 、 Metal 、 Inert 、 Compounds of carbon 、 Reagent 、 Acetylacetone
摘要: Supercritical fluid chromatography using packed, analytical-scale chromatographic columns was applied to gain separations of several metal-containing systems. Mixtures substituted ferrocenes and metal ..beta..-diketonates were separated by methanol-modified CO/sub 2/ under moderate temperatures (50-100/sup 0/C) pressures (2000-5000 psi) as the mobile phase. Two different types behaviors observed which found be dependent on whether metallic species either substitutionally inert or labile. For species, proper behavior indicative a reversible adsorption mechanism found. labile retention time variation with injected amount, appearance broad component peaks, observation multiple for single injection gave indication irreversible adsorptive mechanism.
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