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)
Table 5
δ13C ratios (‰), (mV), and SD (‰) obtained from DI, SPME, and SSPE.