atomic absorption spectrometry graphite furnace atomic absorption spectrometry 2013-02-27T15:01:32Z A spectroanalytical procedure for the quantitative determination of chemical elements employing the absorption of optical radiation (light) by free atoms in the gaseous state, in this case generated by vaporization of the sample in an electrically heated apparatus coated with graphite, a soft hexagonally-crystallized allotrope of carbon. ETAAS GFAAS JSmith MMO:0000380 electrothermal atomic absorption spectrometry graphite furnace atomic absorption spectroscopy measurement_method_ontology