The discussion focuses on the analysis of a recorded infrared spectrum where the user, Alain, is attempting to identify a gas species overlapping with CO2. Alain utilizes a 35m borosilicate gas cell and corrects the spectral data using reference gases H2 6.0 and He 6.0. The measurements are conducted at a constant pressure of 1000 mbar and temperature of 320 K. Notably, this spectrum is part of a series of ten samples, with the presence of 340 ppm Ethane, 14 ppm Methane, and traces of other hydrocarbons.
PREREQUISITESResearchers and analysts in the field of spectroscopy, environmental scientists, and anyone involved in gas composition analysis and quality testing of gas samples.
Yes, I am using a 35m gas cell of borosilicate and I am corrected the data by using different reference gases (H2 6.0 and He 6.0). This recorded spectrum is only one of 10 different spectra from different samples collected for quality tests. I am keeping the pressure and the temperature constant at respectively 1000 mbar and 320 K during the measurements. All other samples, from various locations (H2 storage facilities) are not showing this special absorbance and it's the first time I have observed this absorbance feature. The other species present in this sample are 340 ppm Ethane, 14 ppm Methane and traces of Propane, IsoButane n-Butane and Ethanol. Regards, AlainCharles Link said:One question I have is if you had the gas in some kind of glass container, did you correct your data for spectral runs with the glass, with and without the gas inside?