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- Posts: 2
- Joined: Fri Oct 13, 2017 11:15 am
I have a varian 450 GC with FID detector and auto sampler and have been using a ZB-FFAP column to detect short chain fatty acids.
I have a bubbler evaporation system that is used to bubble nitrogen gas through liquid phase acetic acid samples and generate a vapour which is used as a test gas for the calibration of VOC sensors.
http://www.mdpi.com/coatings/coatings-0 ... 4-g001.png
The bubbler system is similar to this.
I, however, would like to quantify the concentration of the generated test gas using my GC. I am curious if this is possible to do by collecting a sample of the test gas (acetic acid/humidity/nitrogen in a gas phase matrix) and directly injecting into the autosampler injection port, Are there matrix concerns when comparing against the liquid phase calibration standards I have used (acetic acid/h20 in a liquid phase matrix with nitrogen as the carrier gas used in the GC)?
Would titration (before bubbling and then some hours after) be a suitable alternative method of verifying the concentration of my test gas??