Carbon Dioxide Emissions Monitoring

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Gas mixtures for measuring hydrocarbon emissions

An objective assessment of the sampling system, pressure reduction system, carrier and calibration gas systems against industry best practice

Component	Amount fraction range (%mol/mol)
Nitrogen	0.1 to 22
carbon dioxide	0.05 to 15
Methane	34 to 100
Ethane	0.1 to 35
Propane	0.05 to 15
iso-butane	0.01 to 2
n-butane	0.01 to 2
neo-pentane	0.002 to 0.35
iso-pentane	0.005 to 0.35
n-pentane	0.005 to 0.35
n-hexane	0.001 to 0.35
2-methylpentane	0.001 to 0.35
3-methylpentane	0.001 to 0.35
2,2-dimethylbutane	0.001 to 0.35
Benzene	0.001 to 0.2
cyclohexane	0.001 to 0.2
n-heptane	0.001 to 0.2
toluene	0.001 to 0.1
methylcyclohexane	0.001 to 0.1
n-octane	0.0005 to 0.05
n-nonane	0.0005 to 0.02
n-decane	0.0005 to 0.005
C6+	0.001 to 0.35
helium	0.005 to 0.2
hydrogen	0.005 to 0.2

ISO 17034 Natural gas and LNG mixture ranges