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Hydrogen detection limit
Posted: Mon Sep 21, 2015 4:11 am
by thohry
Hi all,
We have used GC-TCD for hydrogen analysis, and the LOD is about 50-100ppm. I am not sure if there is a detector and/or ways to analyze H2 gas down to 1 ppm ?
Thanks for all input.
Re: Hydrogen detection limit
Posted: Mon Sep 21, 2015 1:17 pm
by AICMM
thohry,
A helium ionization detector will get you down to 1 ppm. Need to be aware that, like the TCD, it will see everything else in your sample. You can look at mine (DBDHID) or Valco's (PDHID) for a retro-fit version that will fit on most GC's. Let me know if you need more info aicmm at flash dot net.
Best regards,
AICMM
Re: Hydrogen detection limit
Posted: Tue Sep 22, 2015 4:04 am
by thohry
thohry,
A helium ionization detector will get you down to 1 ppm. Need to be aware that, like the TCD, it will see everything else in your sample. You can look at mine (DBDHID) or Valco's (PDHID) for a retro-fit version that will fit on most GC's. Let me know if you need more info aicmm at flash dot net.
Best regards,
AICMM
Thank you for the help.
Re: Hydrogen detection limit
Posted: Tue Sep 22, 2015 10:46 am
by CE Instruments
We have a Valco one for sale, pre owned, are you in the UK we can install
Re: Hydrogen detection limit
Posted: Wed Sep 23, 2015 2:03 am
by thohry
We have a Valco one for sale, pre owned, are you in the UK we can install
Thank you for the offer. but we are not in the UK. Anyway, if in case, I will contact you.