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  • PhD Member
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An analyst loads a blood alcohol sample onto an instrument equipped with a single column and FID detector.

The run is completed and the analyst recaps the vial and places it on a second headspace unit connected to GC-FID with the confirmation column. What is the problem with this approach?

Marked as best answer by Lilyl

  • PhD Member
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Headspace samples cannot be re-used. Once heated and the seal punctured, the headspace
concentration will not be the same. A fresh sample is required.

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Please could you help me with another one. Thank you