What GC column is able to separate hydrogen, oxygen, and nitrogen with helium as carrier gas?
What GC column is able to separate hydrogen, oxygen, and nitrogen with helium as carrier gas?
Best choice would be a mole sieve column. Pic is from an older Agilent catalog.
Be aware:
It's best to use a pre-column that can be backflushed to keep heavy components off the mole sieve column. CO2, water, and C2 and heavier hydrocarbons can take a very long time to elute from the column. A PLOT Q column is frequently used for this.
If you are using TCD with helium carrier/reference, hydrogen will have a very low response. (Typically a second TCD with argon or nitrogen carrier is used for hydrogen quantitation.)
Best choice would be a mole sieve column. Pic is from an older Agilent catalog.
Be aware:
It's best to use a pre-column that can be backflushed to keep heavy components off the mole sieve column. CO2, water, and C2 and heavier hydrocarbons can take a very long time to elute from the column. A PLOT Q column is frequently used for this.
If you are using TCD with helium carrier/reference, hydrogen will have a very low response. (Typically a second TCD with argon or nitrogen carrier is used for hydrogen quantitation.)