We are using GC-TCD with Carboxen 1010 PLOT, 30 m x 0.53 mm I.D.. We want to be able to detect hydrogen and oxygen in the same run, and by external calibration method estimate the amount of oxygen and hydrogen. I applied these conditions:
oven: 35 °C (10min)
inj.: 200 °C
det.: 150 °C filament temp: 230°C
flow rate: Argon, 3.0 mL/min.
injection: 500.0 μL syringe injection
I don't know how to set up make-up flow and reference flow, and if I used other parametrs well, because we can only see one peak from air (nitrogen and oxygen).
maybe you need use 5A or 13X molsieve coulum, and do you know the approximate concentration of hydrogen?
Carboxen 1010 PLOT column is very stable. I recommend it highly for qualitative and quantitative detection of hydrogen, CO2, N2 and CO. I used argon as carrier gas. Unfortunately I could not find a way to separate the O2 peak for detection. I think there is no way to detect O2 on this type of column with argon as carrier gas. The best way is to change the column to molsieve column, especially when you want to detect both hydrogen and oxygen.
Jacek Gliniak : I intend to buy this Carboxen 1010 PLOT column for separation of H2, CO2, O2, N2 and CO. My detector is only TCD. Is it highly for qualitative and quantitative detection of hydrogen, CO2, N2 and CO with TCD ? Because I check information, I see that have TCD, Methanizer-FID. Can you give me some suggestions?
https://www.sigmaaldrich.com/technical-documents/articles/analytical-applications/gc/astm-d3612-96-gc-analysis-of-transformer-gas-g002209.html
Can Nguyen , I see in the link you posted that they managed to separate oxygen from nitrogen peak with argon as carrier gas, and with very low flow. I tried the same conditions on our GC-TCD but I could not observe it. I think it is very easy to make this peaks overlap if the amount of O2 or N2 is higher. I would not suggest using Carboxen 1010 PLOT column for detection of O2. Maybe changing the carrier gas to helium would help to separate O2 and N2, but I have never tried it. For other gases like H2, N2, CO and CO2 it is easy to separate them on this column. Here is some website link that maybe can help find the conditions you need. Good luck! https://www.sigmaaldrich.com/content/dam/sigma-aldrich/docs/SAJ/Brochure/1/j_plot.pdf
Jacek Gliniak, Thank you for your detail comment. In our case, O2, N2 are not high, H2 and CO2 are more important. Thank you.
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