Function: When the gas chromatograph is used for quantitative and qualitative detection of the article, the thermal analyzer is a sample pretreatment device, which heats the sample, desorbs the collected vapor (volatile organic compound) and then introduces it into the gas chromatograph for detection. Principle: The sample air to be tested is introduced into the adsorption tube; the appropriate adsorbent is determined based on the sampled compound or mixture. After selecting a suitable adsorbent, the volatile components remain in the adsorption tube. Therefore, volatile components in the flowing air sample are eliminated. The adsorption tube is heated to desorb the collected vapor (volatile organic compound), and the sample to be tested is analyzed with an inert carrier gas into a capillary gas chromatograph equipped with a flame ionization detector.
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