Trace Copper and Nickel Chelate Detection by Electron Capture Gas Chromatography

Abstract

The range of volatile metal chelates whose chemical form and gas chromatographic characteristics enable their elution and determination to picogram levels by electron capture detection has been extended to fluorinated tetradentate beta-ketoamine chelates of divalent transition metals. These complexes, notably of copper, nickel and palladium exhibit high electron capture sensitivities due both to the presence of fluorine atoms and to the presence of three chelate rings per molecule. High thermal and gas chromatographic stabilities enable the quantitative elution of

Key Words:

• gas-liquid chromatography
• volatile chelates
• copper and nickel complexes
• tetradentate beta-ketoamine chelates
• trace determinations
• electron capture detection