title: Thermal desorption combined with atmospheric pressure photo ionization for the analysis of volatile compounds and its possible applications.
abstract: We report an approach to study volatile organic compounds based on thermal desorption combined with atmospheric pressure photo ionization. The approach allows the sequential evaporation of different fractions of the sample, which simplifies the mass spectrum. We have applied the developed method for the detection of petroleum in vegetable oil. We have shown that in the negative mode, ions of fatty acids corresponding to vegetable oil dominates, while in the positive mode under relatively low temperature the light fraction of petroleum rapidly evaporates making it easy detectable.
authors.affiliation: Skolkovo Institute of Science and Technology Novaya St., 100, Skolkovo 143025 Russian Federation and Institute for Energy Problems of Chemical Physics Russian Academy of Sciences Leninskij pr. 38 k.2, 119334 Moscow, Russia and Emanuel Institute for Biochemical Physics Russian Academy of Sciences Kosygina st. 4, 119334 Moscow, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow Region, Russia. yura542@rambler.ru.
authors.forename: Yury
authors.initials: Y
authors.lastname: Kostyukevich
authors.affiliation: National Research University Higher School of Economics, 20 Miasnitskaya Ulitsa, Moscow 101000, Russia.
authors.forename: Ludmila
authors.initials: L
authors.lastname: Borisova
authors.affiliation: Institute for Energy Problems of Chemical Physics Russian Academy of Sciences Leninskij pr. 38 k.2, 119334 Moscow, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow Region, Russia.
authors.forename: Alexey
authors.initials: A
authors.lastname: Kononikhin
authors.affiliation: Emanuel Institute for Biochemical Physics Russian Academy of Sciences Kosygina st. 4, 119334 Moscow, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow Region, Russia.
authors.forename: Igor
authors.initials: I
authors.lastname: Popov
authors.affiliation: Emanuel Institute for Biochemical Physics Russian Academy of Sciences Kosygina st. 4, 119334 Moscow, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow Region, Russia.
authors.forename: Eugene
authors.initials: E
authors.lastname: Kukaev
authors.affiliation: Skolkovo Institute of Science and Technology Novaya St., 100, Skolkovo 143025 Russian Federation and Institute for Energy Problems of Chemical Physics Russian Academy of Sciences Leninskij pr. 38 k.2, 119334 Moscow, Russia and Emanuel Institute for Biochemical Physics Russian Academy of Sciences Kosygina st. 4, 119334 Moscow, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudnyi, Moscow Region, Russia.
authors.forename: Eugene
authors.initials: E
authors.lastname: Nikolaev