Column for air analysis

[thohry]

Dear all,

I am going to analyze O2, N2 and CO2. Which column is the best for that?

Thank you

[Ron]

What else is present in the matrix? What are the concentration ranges for the analytes of interest?

[thohry]

What else is present in the matrix? What are the concentration ranges for the analytes of interest?

Thank for the answer. I analyze O2, N2 & CO2 balanced in H2. All the 3 gases is about less than 1 %.

[chromatographer1]

Molecular sieve 13X or Carboxen 1000 packing in a packed column is a good solution. 2m - 4.5 m 0.125 inch ID or the capillary equivalents.

See Supelco or Alltech or Restek

Rodney George
consultant

[LDCCL]

i am test all kind of gases, i think O2 and N2, and Ar CO can use molsieve 5A to sperate them and as for CO2,had better use haysep Q, and you will get good results, if you banance is H2, had better use heartcut function to sperate them