Published James Diekmann on June 12, 2019

4 responses to “Using Static Headspace GC-VUV to Detect Methanol in Light Crude Oil”

  1. david green says:

    Nice application, really demonstrates the power of GCHS-VUV. Also clearly demonstrates great alcohol separation and detection.
    I believe GCHS-VUV is the way forward for all residual solvent analysis especially for Pharmaceutical applications.

    • James Diekmann says:

      Thanks for the response David Green! GC-VUV is a fantastic detector for volatile analysis and couples very well with headspace.

      Funny that you mention residual solvents in pharma. Although most of our blogs have revolved around petrochemical, we do have posts on residual solvents in our blog vault. For example, a blog post by Jack Cochran entitled “Residual Solvents Analysis – The Lazy Analytical Chemist” that talks about using headspace GC-VUV for residual solvents.

      If you have any specific questions, feel free to shoot me an email at or leave another comment!

  2. Peter Tran says:

    Thanks James for sharing. I would however like to add that unless a lab does have many applications to make full use of the VUV otherwise having a HS with VUV is something most of the labs would not be able to afford and thus the traditional technique of backflushing is still preferable which requires only often change out of inlet liners. Would you agree ?

    • James says:

      Hi Peter!

      You have a valid point. A lab’s cost per analysis can easily impact capital equipment investment. Of course this technique isn’t going to work for every single lab, but in my opinion it comes down to a few factors:

      1.) How often GC consumables are being replaced.
      2.) If the set-up is strictly used for dedicated analysis.
      3.) If compound identification is important.

      One example that comes to mind is a lab on an an offshore oil rig. Depending on the safety policies/requirements, an FID can be problematic to use, so VUV could be a viable alternative.

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