Development of new method of δ13C measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry

Li, Zhongping; Wang, Xibin; Li, Liwu; Zhang, Mingjie; Tao, Mengchu; Xing, Liyuan; Cao, Chunwei; Xia, Yongqiu

doi:10.1016/j.chroma.2014.10.089

Cited by 42 publications

(20 citation statements)

References 28 publications

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“…Helium isotopes were analyzed by Noblesse noble gas mass spectrometer, and carbon isotopes were analyzed by Delta Plus XP mass spectrometer. Detailed analytical procedures are described in Luo et al (2014) and Li et al (2014).…”

Section: Methodsmentioning

confidence: 99%

Magma-derived CO 2 emissions in the Tengchong volcanic field, SE Tibet: Implications for deep carbon cycle at intra-continent subduction zone

Zhang

Guo

Sano

et al. 2016

Journal of Asian Earth Sciences

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Section: Methodsmentioning

confidence: 99%

Magma-derived CO 2 emissions in the Tengchong volcanic field, SE Tibet: Implications for deep carbon cycle at intra-continent subduction zone

Zhang

Guo

Sano

et al. 2016

Journal of Asian Earth Sciences

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“…The coating on the fiber can consist of a variety of materials, including carbowax template resin, polydimethylsiloxane, polydimethylsiloxane divinylbenzene, polyacrylate, carboxen polydimethylsiloxane, and carbowax divinylbenzene [30, 31]. The carboxen/polydimethylsiloxane (CAR/PDMS) fiber was first used in 2014 to measure the carbon isotope composition of volatile light hydrocarbons in natural gas by combining SPME and GC-IRMS [32]. This research work opened the way to a new application of SPME technology into the natural gas study area.…”

Section: Methodsmentioning

confidence: 99%

Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C₁–C₉) in Natural Gas

Cao

et al. 2018

Journal of Analytical Methods in Chemistry

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Solid-phase microextraction (SPME) coupled with gas chromatography-isotope ratio mass spectrometry (GC-IRMS) has already been applied to collect and identify volatile light hydrocarbons in oil and source rocks. However, this technology has not yet been used to analyze volatile light hydrocarbons in dry gas (natural gas with C1/C2+ > 95%). In this study, we developed a method to measure the molecular and carbon isotope composition of natural gas using divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fiber. This fiber proved to be suitable for extracting C1–C9 hydrocarbons from natural gas without inducing carbon isotopic fractionation. Notably, the extraction coefficients of the analytes were not the same but rather increased with the increasing carbon number of the hydrocarbons. Nevertheless, we successfully identified 24 hydrocarbons from the in-lab standard natural gas, while also obtaining the carbon isotope composition of C1 to C9 hydrocarbons with satisfying repeatability. The relative standard deviation (RSD) of the molecular composition data was in the range of 0.06–0.74%, with the RSDs of the carbon isotope composition data not exceeding 1‰. Finally, seven natural gas samples, collected from different sedimentary basins, were successfully analyzed and the stable carbon isotope compositions of C1–C9 hydrocarbons present in these were determined through this method. Overall, the new approach provides a simple but useful technique to obtain more geochemical information about the source and evolution of natural gas.

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“…Prospects. This study facilitates in trace hydrocarbons in natural gas where some barriers and baffles restrict its measurement [25]. For instance, isotopic fractionations appeared obviously with a high temperature (e.g., higher than 350°C), but the mechanism still remains to be solved.…”

Section: Legacy Issues and Futurementioning

confidence: 99%

“…To achieve the analysis of these particular hydrocarbon compounds for various applications, many previous works have been carried out, and some novel and practical methods such as purge and trap (P&T) and solid phase microextraction (SPME) have been put forward, and these highly efficient techniques made remarkable achievements for preconcentration of trace volatile or semivolatile organic compounds [21][22][23][24][25]. Though these works greatly improved the detection limit for most trace compounds, these often exhibited selectivity for some hydrocarbon compounds during the extraction process, making the whole analysis quite unfeasible.…”

Section: Introductionmentioning

confidence: 99%

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)

Yan

et al. 2019

Geofluids

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Sample preparation technique, for the analysis of δ13C ratios in oil and gas samples, has gradually been recognized as one of the most crucial steps of the whole analytical process. In this study, a new convenient method, syringe solid phase extraction (SSPE), was proposed for measuring δ13C in natural gas samples. Based on conditional experiments of temperature and time, SSPE fitted with activated carbon adsorbent was applied with a gas chromatography/isotope ratio mass spectrometry (GC/IRMS) system for trace carbon isotope analysis. The results showed that isotopic fractionation was not clearly observed during the adsorption and desorption process, and the δ13C ratios measured by SSPE-GC/IRMS were in good agreement with the known δ13C ratios of CH4~C5H12 measured by GC/IRMS with the accuracy all within ±0.48‰. A natural gas sample was applied to verify the efficiency of this new method, and the obtained results confirmed that SSPE-GC/IRMS is a reliable technique characterized with simplicity, efficiency, and reliability.

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Development of new method of δ13C measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry

Cited by 42 publications

References 28 publications

Magma-derived CO 2 emissions in the Tengchong volcanic field, SE Tibet: Implications for deep carbon cycle at intra-continent subduction zone

Magma-derived CO 2 emissions in the Tengchong volcanic field, SE Tibet: Implications for deep carbon cycle at intra-continent subduction zone

Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C₁–C₉) in Natural Gas

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)

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Development of new method of δ13C measurement for trace hydrocarbons in natural gas using solid phase micro-extraction coupled to gas chromatography isotope ratio mass spectrometry

Cited by 42 publications

References 28 publications

Magma-derived CO 2 emissions in the Tengchong volcanic field, SE Tibet: Implications for deep carbon cycle at intra-continent subduction zone

Magma-derived CO 2 emissions in the Tengchong volcanic field, SE Tibet: Implications for deep carbon cycle at intra-continent subduction zone

Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C1–C9) in Natural Gas

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)

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Product

Resources

About

Method for Analyzing the Molecular and Carbon Isotope Composition of Volatile Hydrocarbons (C₁–C₉) in Natural Gas

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)