The thermal decomposition process and the pyrolytic products under thermo-gravimetry of Artemisia argyi was investigated by synchronous thermal analysis/fourier transform infrared spectroscopy and Gas chromatography mass spectrometry.The thermo-gravimetric and infrared changes of Artemisia argyi samples under temperature programmed were monitored under nitrogen and oxygen atmosphere,respectively.The pyrolysis products at 274 and 312℃were synchronously analyzed by gas chromatography/mass spectrometry,and 41 main compounds were found under the two atmosphere.The types of compounds de-tected in different atmospheres are different.29 main compounds were detected in nitrogen atmosphere.The contents of γ-terpinene,α-terpineol,verbenenol,paraffinic hydrocarbon,terpene olene are high.A total of 27 main compounds were detected in oxygen atmosphere.The content of paracymosin and γ-terpinene are high.This method is simple to operate and can detect the pyrolysis products in real time.It provides a new rapid analysis and test meth-od for exploration of Artemisia argyi.
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