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Materić, Dušan; Lanza, Matteo; Sulzer, Philipp; Herbig, Jens; Bruhn, Dan; Turner, Claire; Mason, Nigel and Gauci, Vincent
(2015).
DOI: https://doi.org/10.1007/s00216-015-8942-5
Abstract
Proton Transfer Reaction Mass Spectrometry (PTR-MS) is a well-established technique for real-time VOCs (Volatile Organic Compounds) analysis. Although, it is extremely sensitive (with sensitivities of up to 4500 cps/ppbv, limits of the detection < 1 pptv and the response times of approximately 100 ms) the selectivity of PTR-MS is still somewhat limited, as isomers cannot be separated. Recently, selectivity-enhancing measures, such as manipulation of drift tube parameters (reduced electric field strength) and using primary ions other than H3O+, such as NO+ and O2+ have been introduced. However, monoterpenes, which belong to the most important plant VOCs, still cannot be distinguished so that more traditional technologies, such as gas chromatography mass spectrometry (GC-MS), have to be utilized. GC-MS is very time consuming (up to 1 h) and cannot be used for real-time analysis. Here we introduce a sensitive, near real-time method for plant monoterpene research: PTR-MS coupled with fastGC. We successfully separated and identified six of the most abundant monoterpenes in plant studies (α- and β-pinenes, limonene, 3-carene, camphene, and myrcene) in less than 80 s, using both standards and conifer branch enclosures (Norway spruce, Scots pine and Black pine). Five monoterpenes usually present in Norway spruce samples with a high abundance were separated even when the compound concentrations were diluted to 20 ppbv. Thus, fastGC-PTR-ToF-MS was shown to be an adequate one-instrument solution for plant monoterpene research.
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About
- Item ORO ID
- 44016
- Item Type
- Journal Item
- ISSN
- 1618-2642
- Project Funding Details
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Funded Project Name Project ID Funding Body Proton Ionization Molecular Mass Spectrometry (PIMMS) Initial Training Network (ITN) 287382 EU FP7 Programme - Keywords
- PTR-MS; fastGC; monoterpenes; VOC; plant VOCs; pinene
- Academic Unit or School
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Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Life, Health and Chemical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences - Research Group
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Innovation, Knowledge & Development research centre (IKD)
OpenSpace Research Centre (OSRC)
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Physics - Copyright Holders
- © 2015 Springer-Verlag Berlin Heidelberg
- Depositing User
- Dušan Materić