Analysis of the volatile monoterpene composition of citrus essential oils by photoelectron spectroscopy employing continuously monitored dynamic headspace sampling

Ganjitabar, Hassan; Hadidi, Rim; Garcia, Gustavo A.; Nahon, Laurent; Powis, Ivan

doi:10.1039/d3an01448g

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2023

DOI: 10.1039/d3an01448g

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Analysis of the volatile monoterpene composition of citrus essential oils by photoelectron spectroscopy employing continuously monitored dynamic headspace sampling

Hassan Ganjitabar,

Rim Hadidi,

Gustavo A. Garcia

et al.

Abstract: Monoterpene composition of the volatile headspace of citrus oils can be extracted from the information in their structured photoelectron spectra, opening the way towards rapid ambient temperature analysis by direct sampling without prior separation.

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2024

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The isomer distribution of C6H6 products from the propargyl radical gas-phase recombination investigated by threshold-photoelectron spectroscopy

Hrodmarsson,

Garcia,

Bourehil

et al. 2024

Commun Chem

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The resonance-stabilization of the propargyl radical (C3H3) makes it among the most important reactive intermediates in extreme environments and grants it a long enough lifetime to recombine in both terrestrial combustion media and cold molecular clouds in space. This makes the propargyl self-reaction a pivotal step in the formation of benzene, the first aromatic ring, to eventually lead to polycyclic aromatic hydrocarbons in a variety of environments. In this work, by producing propargyl radicals in a flow tube where propyne reacted with F atoms and probing the reaction products by mass-selected threshold-photoelectron spectroscopy (TPES), we identified eight C6H6 products in total, including benzene. On top of providing the first comprehensive measurements of the branching ratios of the eight identified C6H6 isomers in the propargyl self reaction products (4 mbar, 298 K conditions), this study also highlights the advantages and disadvantages of using isomer-selective TPES to identify and quantify reaction products.

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The isomer distribution of C6H6 products from the propargyl radical gas-phase recombination investigated by threshold-photoelectron spectroscopy

Hrodmarsson,

Garcia,

Bourehil

et al. 2024

Commun Chem

View full text Add to dashboard Cite

show abstract

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Analysis of the volatile monoterpene composition of citrus essential oils by photoelectron spectroscopy employing continuously monitored dynamic headspace sampling

Abstract: Monoterpene composition of the volatile headspace of citrus oils can be extracted from the information in their structured photoelectron spectra, opening the way towards rapid ambient temperature analysis by direct sampling without prior separation.

Cited by 1 publication

References 78 publications

The isomer distribution of C6H6 products from the propargyl radical gas-phase recombination investigated by threshold-photoelectron spectroscopy

The isomer distribution of C6H6 products from the propargyl radical gas-phase recombination investigated by threshold-photoelectron spectroscopy

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