Measurement of stable carbon isotope ratio of volatile organic compounds using thermal desorption-gas chromatography-isotope ratio mass spectrometry

Measurement of stable carbon isotope ratio of volatile organic compounds using thermal desorption-gas chromatography-isotope ratio mass spectrometry | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 11 July 2025 V1 Latest version Share on Measurement of stable carbon isotope ratio of volatile organic compounds using thermal desorption-gas chromatography-isotope ratio mass spectrometry Authors : Yuhong Li 0000-0002-8440-3573 and Xijie Yin [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.175221956.68168430/v1 146 views 64 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Rationale: The isotopic analysis of atmospheric volatile organic compounds (VOCs), and in particular of their stable carbon isotope ratio (δ 13 C), could potentially be used as an effective tool for identifying the sources of VOCs. However, there have been very few methodological validation studies on such analyses. Methods: This paper presents a method combining thermal desorption (TD) unit with gas chromatography isotope ratio mass spectrometry (GC-IRMS) to determine compound specific δ 13 C values of VOCs. Tenax TA was employed as the adsorbent material in stainless steel TD tubes. Results: Experiments showed that variations in sample injection size, TD temperature, and TD time did not induce isotope fractionation of VOCs. The δ 13 C values obtained via TD - GC - IRMS were comparable to those from direct injection, with standard deviations (SD)≤0.4% for 7 compounds. After approximately 50 days of storage, the δ 13 C values remained stable. Measurements of atmospheric VOCs’ δ 13 C values revealed a source consistent with traffic emissions. Conclusions: The capacity of TD-GC-IRMS to analyze δ 13 C can supplement the characterization of atmospheric VOCs and facilitate further identification of their sources. Supplementary Material File (20250711measurement of stable carbon isotope ratio of volatile organic compounds using thermal desorptio.docx) Download 249.40 KB Information & Authors Information Version history V1 Version 1 11 July 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords gas chromatography isotope ratio mass spectrometry stable carbon isotope ratio thermal desorption volatile organic compounds Authors Affiliations Yuhong Li 0000-0002-8440-3573 Third Institute of Oceanography Ministry of Natural Resources View all articles by this author Xijie Yin [email protected] Third Institute of Oceanography Ministry of Natural Resources View all articles by this author Metrics & Citations Metrics Article Usage 146 views 64 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Yuhong Li, Xijie Yin. Measurement of stable carbon isotope ratio of volatile organic compounds using thermal desorption-gas chromatography-isotope ratio mass spectrometry. Authorea . 11 July 2025. DOI: https://doi.org/10.22541/au.175221956.68168430/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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