I want to use TCD detector in a GC-MS with He as a carrier gas to detect nitrogen. Can anybody guide me, which column I should use? Whether capillary columns like HP-5, PLOT-Q will work or not?
PLOT-Q is ok, if you don't have O2 in the mixture - they do not separate on porapak Q. To separate O2 and N2 you need a mole.sieve 5A or carbon mol. sieve.
Theoretically you should detect N2 also using MS but TCD for sure will be much more suitable.