title: Tentative method for gas chromatographic analysis of O2, N2, CO, CO2, and CH4.
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis; D002849:Chromatography, Gas; D005740:Gases / Q000032:analysis*; D008697:Methane / Q000032:analysis; D008722:Methods; D009584:Nitrogen / Q000032:analysis; D010100:Oxygen / Q000032:analysis
chemical_list: D005740:Gases; D002245:Carbon Dioxide; D002248:Carbon Monoxide; D009584:Nitrogen; D008697:Methane; D010100:Oxygen