AutoGC

Has anyone used teflon lines? I think RTI started with SS and had problems and went to 1/4" teflon and it was working.

The EPA started a project to re-engineer the PAMS Network back in 2011.  The initial stages included a review by the Clean Air Scientific Advisory Committee (CASAC) Air Monitoring and Methods Subcommittee (AMMS) of the current PAMS program and resulted in additional presentations at the NACA Monitor...

I agree with Red. Do you run blanks after your PAMS sample? Sometimes this can give more information. We have seen the heavies disappear in the QC sample and show up in the blank after it. This has been a problem with steel sample lines or sometimes if graphite ferrules come apart.

I understand the issues with retention time instability on PLOT columns but my retention times on the BP column seem to vary a lot. This causes a lot of identification problems because some of the separations are not baseline separations. Does anyone else see this or know what might be causing it?