Determination of <i>δ</i><sup>13</sup>C of Trace Hydrocarbons in Natural Gas Using Syringe Solid Phase Extraction (SSPE) Coupled with Gas Chromatography/Isotope Ratio Mass Spectrometry (GC/IRMS)

<div>Peak areas at different experimental conditions: (a) the adsorption peak areas with adsorption temperatures ranging from 0 to 40°C; (b) the adsorption peak areas at different desorption temperatures from 250 to 350°C; (c) the adsorption peak areas at different adsorption times ranging from 2 to 5 minutes; (d) the adsorption peak areas at different desorption times ranging from 2 to 7 minutes.</div>

Geofluids

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Figure 3

Figure 3: Determination of <i>δ</i><sup>13</sup>C of Trace Hydrocarbons in Natural Gas Using Syringe Solid Phase Extraction (SSPE) Coupled with Gas Chromatography/Isotope Ratio Mass Spectrometry (GC/IRMS) 

Figure 3 | Determination of δ13C of Trace Hydrocarbons in Natural Gas Using Syringe Solid Phase Extraction (SSPE) Coupled with Gas Chromatography/Isotope Ratio Mass Spectrometry (GC/IRMS) 