ČSN EN ISO 6974-5   (385506) Zemní plyn - Stanovení složení a přidružené nejistoty pomocí plynové chromatografie - Část 5: Izotermická metoda pro dusík, oxid uhličitý, uhlovodíky C1 až C5 a uhlovodíky C6+

Anotace textu normy ČSN EN ISO 6974-5   (385506)

This part of this International Standard describes a gas chromatographic method for the quantitative determination of the content of nitrogen, carbon dioxide and C1 to C5 hydrocarbons individually and a composite C6+ measurement, which represents all hydrocarbons of carbon number 6 and above in natural gas samples. It is applicable to the analysis of gases containing constituents within the working ranges (in mole fraction, %): Nitrogen, N2 (0,1-22), Carbon dioxide, CO2 (0,05-15), Methane, CH4 (34-100), Ethane, C2H6 (0,1-23), Propane, C3H8 (0,05-10), iso-Butane, i-C4H10 (0,01-2,0), n-Butane, n-C4H10 (0,01-2,0), neo-Pentane, neo-C5H12 (0,005-0,35), iso-Pentane, i-C5H12 (0,005-0,35), n-Pentane, n-C5H12 (0,005-0,35), Hexanes +, C6+ (0,005-0,35).