Problem with amine sensitivity
Posted: Sat Mar 30, 2019 3:34 pm
Hey there community,
Fairly new to the GC field. I work in a very small environmental testing lab, mostly diesel/oil/gas runs with an FID.
I’m currently trying to get another gc operating for amines analysis but I’m having a few hiccups. I’m using a standard of diethylamine (DEA) and triethylamine (TEA) in nanopurified water, running on an Agilent GC-6890 with a Restek Rtx-5 amine column.
When I run my calibration curve I find that my diethylamine seems to bounce all over the place, my high curve point seem ok (200-600ppm, although I seem to have a 10-15% loss), however my low points seem to loose all or most traces of diethylamine (this occurs between 5-150 ppm). Anyone by chance have any advice as to what could be occurring?
Fairly new to the GC field. I work in a very small environmental testing lab, mostly diesel/oil/gas runs with an FID.
I’m currently trying to get another gc operating for amines analysis but I’m having a few hiccups. I’m using a standard of diethylamine (DEA) and triethylamine (TEA) in nanopurified water, running on an Agilent GC-6890 with a Restek Rtx-5 amine column.
When I run my calibration curve I find that my diethylamine seems to bounce all over the place, my high curve point seem ok (200-600ppm, although I seem to have a 10-15% loss), however my low points seem to loose all or most traces of diethylamine (this occurs between 5-150 ppm). Anyone by chance have any advice as to what could be occurring?