Abstract
The combination of a Gas Chromatograph and an Atomic Absorption Spectrophotometer provides both a sensitive element- and speciation-specific system for the analyses of low boiling organometallic compounds. The system inherits the separation capability of gas chromatography and the specificity of atomic absorption spectroscopy. The atomic absorption instruments can be operated in either flame or furnace mode. It handles liquid and gaseous samples with detection sensitivity at the subnanogram level expressed as the element. It has been successfully applied to the analyses of several alkylated metallic compounds, such as that of Hg, Pb, Cd, As, Se, Sn, etc., some of which are biologically methylated in the environment.
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