Halocarbons

[georgij23]

Hello!

Any body have experience with halocarbons (freons) testing. The question is it is possible check halocarbons purity with GC FID detector? I find from agilent column guide parameters their is GC gas pro column and detector MSD.

[Pimi]

Hi!

If your baseline is really clen and stable it is possible to check purity of halocarbones but with low reliability.

For example. I check residual organic solvents in substance. One solvent is chloroform at 6 ppm. So I can see around 4 - 6 ppm of chloroform quantity, less amount only qualitative definition because signal/noise becom less then 10.

So make model mix and check what the smallest amount you can see.

PS: FID for halocarbons is not good desicion. ECD good )

[georgij23]

thanks, for your answer. I need check freons R410A, that is mix of difluormethane and pentafluormethane, and 50/50 percent mix. I dont need check small concentration ppm. That i ask about FID detector