BSI BS EN ISO 6974-5:2014

Current Revision
Natural gas. Determination of composition and associated uncertainty by gas chromatography -- Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons

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BSI BS EN ISO 6974-5:2014

Natural gas. Determination of composition and associated uncertainty by gas chromatography -- Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons

PUBLISH DATE 2014
PAGES 36
BSI BS EN ISO 6974-5:2014

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 given in TableΒ 1.

TableΒ 1

Component working ranges

Component Β  Mole fraction

%

Β  Β  Min. Max.
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
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