The investigation of the birch tar using ultrahigh resolution Fourier transform ion cyclotron resonance mass spectrometry and Hydrogen/Deuterium exchange approach

Yury Kostyukevich, Alexander Zherebker, Alexey Kononikhin, Igor Popov, Irina Perminova, Eugene Nikolaev

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)

    Abstract

    Birch tar was widely used since the Stone Age as adhesive, disinfectant, mosquito repellent etc. Despite of this, the chemical composition of the birch tar remains largely unknown. Here we implement the electrospray ionization ultrahigh resolution Fourier transform mass spectrometry for the determination of the molecular formulas of the birch tar constituents. It was found that in the positive ESI mode the compounds containing 2 nitrogen atoms dominates in the spectrum. Compounds containing 1 nitrogen atom were detected too but they are less abundant. In the negative ESI mode the compounds containing from 2 to 4 oxygen atoms were detected. Also, we used recently developed in-ESI source Hydrogen/Deuterium exchange approach for the structural characterization of the individual molecules. We observed the 1 H/D exchange for major O3 compounds and did not observe H/D exchange for almost all O2 compounds. Corresponding neutral molecules have 2 and 1 labile hydrogens and as a consequence -OH groups respectively.

    Original languageEnglish
    Pages (from-to)29-34
    Number of pages6
    JournalInternational Journal of Mass Spectrometry
    Volume404
    DOIs
    Publication statusPublished - 20 Jun 2016

    Keywords

    • Dissolved organic matter
    • ESI
    • FT ICR
    • Isotopic exchange

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