ESI adducts etc

Discussions about GC-MS, LC-MS, LC-FTIR, and other "coupled" analytical techniques.

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: Camisotro

: Posts: 184; Joined: Thu May 07, 2009 7:32 pm

by Camisotro » Wed Jul 22, 2009 7:16 pm

Do you have the option of temporarily running your MS from a higher-purity N2 cylinder, to see if that makes a difference?

: tedinelkgrove

: Posts: 8; Joined: Fri Aug 21, 2009 4:56 am

by tedinelkgrove » Mon Aug 24, 2009 9:02 pm

any ideas how the N2 generator could be the source of contamination. Wouldn't you need a solvent to come into contact with N2 parts to leach the plasticizers out? The only liquid is water vapor from the air.

: orcicdejan

: Posts: 81; Joined: Fri May 20, 2005 5:33 am

by orcicdejan » Mon Aug 24, 2009 10:00 pm

Tedinelkgrove,

I'm afraid I have no other N2 to switch to but the one from the N2 generator. I will try to mount the trap again in the system, though. My problems seem to have started somewhere around the time it was removed, so it might be a source of at least some problems.

Dejan Orcic
Asst. prof.
Department of Chemistry, Biochemistry and Environmental Protection
Faculty of Sciences, Novi Sad, Serbia

Re: ESI adducts etc

: celine.chartrand

: Posts: 1; Joined: Wed Dec 18, 2013 4:03 pm

by celine.chartrand » Wed Dec 18, 2013 4:30 pm

Tedinelkgrove,
What happened after you reinstalled the trap? Did the 214 disappear? I am having the same issue with my instrument, I have a LTQ Orbitrap XL. The 214 appeared about a year ago and we have tried everything we could think of for troubleshooting but the 214 is always present.

Celine

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