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Argon as the carrier gas.
Posted: Wed Mar 16, 2022 11:34 pm
by greg07
Hello,
I would like to ask for your comments on the argon used as a carrier gas - optimal velocity, used pressures. There is not much to find in Google. I found only the calculator for GC from Agilent, according to him the optimal velocity is about 10 cm/s.
Regards
Re: Argon as the carrier gas.
Posted: Thu Mar 17, 2022 8:52 am
by dblux_
Hello,
I would like to ask for your comments on the argon used as a carrier gas - optimal velocity, used pressures. There is not much to find in Google. I found only the calculator for GC from Agilent, according to him the optimal velocity is about 10 cm/s.
Regards
You will find pressures there as well
Re: Argon as the carrier gas.
Posted: Thu Mar 17, 2022 2:46 pm
by MSCHemist
Hello,
I would like to ask for your comments on the argon used as a carrier gas - optimal velocity, used pressures. There is not much to find in Google. I found only the calculator for GC from Agilent, according to him the optimal velocity is about 10 cm/s.
Regards
10 cm/s is pretty slow about 1/3 of helium. Obviously it cannot be used for MSD work.
Why not use nitrogen a bit faster and cheaper than Argon?
Or, if you are OK with it hydrogen gas. Fast, efficient.
Re: Argon as the carrier gas.
Posted: Thu Mar 24, 2022 8:30 pm
by LALman
Back when I was using Ar in quantity to run my ICP-MS; I also used Ar as the carrier gas for my GC-FID instrument. It worked OK for that.
However, very bad gas to try for GC-MS. Argon quenches and skews the intensities of compound fragmentation. Pure argon for P&T and carrier gas pretty much makes GC-MS unuseable.
Re: Argon as the carrier gas.
Posted: Thu Mar 31, 2022 2:41 pm
by James_Ball
We recently received three tanks of Helium contaminated with Argon, yes it is terrible on the GCMS with purge and trap even at ppm levels.