Indentification of chemicals in a sample using gc/saw and raman spectroscopy

A method for identification of chemicals in a sample, the method comprising:

• receiving surface acoustic wave frequency response data generated by a surface acoustic wave sensor of a gas chromatography/surface acoustic wave system, the surface acoustic wave frequency response data including one or more peaks corresponding respectively to one or more eluted components separated from a sample by a gas chromatograph of the gas chromatography/surface acoustic wave system;
• receiving Raman spectrum data generated by a Raman spectrometer for the one or more eluted components;
• producing a Raman spectrum corresponding to an eluted component of interest from among the one or more eluted components based upon an integration of the Raman spectrum data;
• identifying a set of one or more candidate chemicals for the eluted component of interest based on the corresponding peak of the surface acoustic wave frequency response data;
• and
• searching a Raman database for a match between the produced Raman spectrum and a chemical in the Raman database from among the set of candidate chemicals for the eluted component of interest.