Gas chromatography technique requires how much time?
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Most headspace SPME methods are completed in less than 5 min, while direct immersion SPME may require more than 30 min. Also, direct immersion SPME is highly matrix dependent. The sensitivity of a SPME method is proportional to the number of moles of analyte recovered from the sample
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Desorption time is about 1–4 min and depends on the carrier flow rate in GC instrument. For instance, the trap desorption time is short at the high flow rate, and so, a narrowband injection is achieved. The flow rate of the desorb gas should be selected in accordance with the type of GC column used.
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