This part of ISO 6974 describes a gas chromatographic method for the quantitative determination of the content of
helium, hydrogen, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons in natural gas samples using two
packed columns. This method is applicable to determinations made in on-line processes or in the laboratory. It is
applicable to the analysis of gases containing constituents within the mole fraction ranges and which do not contain any hydrocarbon condensate. These ranges do not represent the limits of detection, but the limits within which the stated precision of the method applies. Although one or more components in a sample may
not be detected present, the method can still be applicable.
This part of ISO 6974 is only applicable in conjunction with parts 1 and 2 of ISO 6974.
Dieser Teil der EN ISO 6974 legt ein gaschromatographisches Verfahren zur quantitativen Bestimmung des Gehaltes an Helium, Wasserstoff, Sauerstoff, Stickstoff, Kohlenstoffdioxid und C1- bis C8-Kohlenwasserstoffen in Erdgasproben mit zwei gepackten Säulen fest. Dieses Verfahren kann zur Bestimmung in On-line-Prozessen und im Laboratorium eingesetzt werden.