I would appreciate some advice on peak tailing I am noticing in some of my runs.
I ran a reference standard through our GC and the resolution on higher BP alkanes is not too good. Resolution is great up until around C12, and tailing starts to become an issue after that. See the image below. It shows C12, C14, C16, C18, C20.
What could be the cause of this, and is this a significant issue? I have noticed no tailing in standard sample analyses, and these include compounds across the BP range higher and lower than these alkanes. I have not noticed tailing in the alkanes present in my samples, though there is usually a high background profile that may be disguising it.