What is the most important challenges in headspace-Gas Chromatography?

The basic principle of all gas chromatographic instruments in headspace is that aliquots of gas chromatographic analytes should be reproducibly and efficiently transferred to the Entrance. There are several steps to do this, including: gas tight syringe, transfer line, sampling loop and sampling on the adsorbent. The most important challenge is to ensure that the composition of the sample arriving at the gas chromatograph truly represents the composition of the headspace vapor in the vial and that the headspace vapor is representative of the original sample composition.


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