Analysis of medical grade O2 for presence of SO2, N2O and NO2 is required. Impurities concentration in O2 is expected to be lower than 1 PPM. Do we have a method information where I might be able to analyze it using GCMS or may GCM PDHID ?
Analysis of medical grade O2 for presence of SO2, N2O and NO2 is required. Impurities concentration in O2 is expected to be lower than 1 PPM. Do we have a method information where I might be able to analyze it using GCMS or may GCM PDHID ?
It is difficult to quantitate NO2 by GC because of the instability of NO, NO2. Please refer to the below article.
Can I analyze NO, N2O and NO2 via GC? (restek.com)
We can analyze the low level (below 1ppm) SO2 and N2O by GC-PDHID or GC-MS with PLOT column. (PLOT Q or U?, it have to be considered.)
As alternaete method, the selective detector (ECD and SCD) is also useful and detect the lower than 1ppm.
Thank you very much.