[Release rule of volatile components of moxa sticks with increase of temperature].

Objective: To systematically investigate the changes rule of volatile oil and its main components released from moxa sticks under different headspace temperatures and combustion conditions, so as to guide the clinical rational selection of the temperature for moxa sticks.

Methods: Using the headspace gas chromatography-mass spectrometry (HS-GCMS) technique, the released gas from moxa sticks was collected at the headspace temperature (from room temperature [25 ℃] to 190 ℃) and during combustion. One mL of the gas was injected into 6890/5973N gas chromatography-mass spectrometry (GCMS).