Identification of chemicals in samples using GC / SAW and Raman spectroscopy

摘要

A method for identifying chemicals in a sample by using a gas chromatograph, a surface acoustic wave (SAW) sensor coupled to the gas chromatograph to define a gas chromatograph (GC) / SAW system, and a Raman spectrometer. The method includes receiving SAW frequency response data generated by a SAW sensor, receiving Raman spectrum data generated by a Raman spectrometer, and a Raman spectrum corresponding to an elution component of interest based on integration of the Raman spectrum data. Generating a set of one or more candidate chemicals for the target elution component based on corresponding peaks in the SAW frequency response data; and a set of candidate chemicals for the target elution component Searching the Raman database for a match between the generated Raman spectrum and the chemical in the Raman database.