Determination of the volatile compounds of vegetable oils using an ion-mobility spectrometer

Krisilova, E. V.; Levina, A. M.; Makarenko, V. A.

doi:10.1134/s1061934814020075

Cited by 23 publications

(9 citation statements)

References 21 publications

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“…In the literature, there are data on iden-tifying aldehydes by means of ion-mobility spectrometry in analyzing food quality [17,18] and in medical diagnostics [19]. However, the above works are of an applied character and do not deal with questions of the structure of the formed ions.…”

Section: Introductionmentioning

confidence: 99%

Structure of aldehyde cluster ions in the gas phase, according to data from ion mobility spectrometry and ab initio calculations

Lantsuzskaya

Krisilov²,

Levina³

2015

Russ. J. Phys. Chem.

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Ion-mobility spectra of a set of aliphatic linear aldehydes with the number of carbon atoms from 3 to 7 are obtained. Values of the mobility corresponding to two most intense peaks, considered to be those of a monomer and dimer, are determined according the spectra. Based on mobility, collision cross sections are calculated using the Mason-Schamp equation. The linear increase in the collision cross sections upon an increase in molecular weight is determined. According to the experimental results, the contribution to the cross section that has no dependence on molecular weight diminishes with the formation of dimers. It is established using quantum chemical calculations that this is associated with a reduction in the dipole moment upon the formation of dimers.

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Section: Introductionmentioning

confidence: 99%

Structure of aldehyde cluster ions in the gas phase, according to data from ion mobility spectrometry and ab initio calculations

Lantsuzskaya

Krisilov²,

Levina³

2015

Russ. J. Phys. Chem.

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“…The equations of trend lines for mobilities corresponding to the monomer and dimer analytes ions are given in Table 2. The values of mobilities of some of the components were found ear lier and presented in [17], this article presents a more complete study of the members of three homologous series. In the range of molecular weights studied (for rather light members of the homologous series), a lin ear decrease in the normalized mobilities with increas ing number of carbon atoms in the analyte was observed, which is consistent with the literature data.…”

Section: Resultsmentioning

confidence: 99%

Identification of volatile organic compounds by retention times and ion mobility spectra

Левин¹,

Lantsuzskaya

2014

J Anal Chem

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Retention times are determined and ion mobility spectra are recorded for reference substances belonging to the homologous series of saturated aldehydes, ketones, and alcohols with a nonbranched chain containing from two to nine carbon atoms. For aldehydes, ketones, and alcohols, the retention times grow exponentially with the number of carbon atoms in the analyte. The retention times decrease exponentially with increasing separation temperature. The dependences of the reduced mobilities of two peaks in the ion ograms of aldehydes, ketones, and alcohols with drift in air at 330 K on the number of carbon atoms in the analyte molecules with a saturated nonbranched chain are obtained. In the range of molecular weights stud ied, normalized mobilities linearly decrease with increasing number of carbon atoms in the analyte, which is consistent with the published data. For substances with equal numbers of carbon atoms and a nonbranched chain, mobility decreases in the order ketone > aldehyde > alcohol.

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“…However, the above results indicate that IMS fingerprints could reflect chemical changes after adulteration with the help of chemometric methods. For a deeper classification, hyphenated IMS with gas chromatographic column and/or headspace sampler might be a good choice for future work (Karpas, 2013;Krisilova, Levina, & Makarenko, 2014). …”

Section: Adulteration Detection Of Counterfeit Sesame Oil Adulteratedmentioning

confidence: 99%

Ion mobility spectrometry fingerprints: A rapid detection technology for adulteration of sesame oil

et al. 2016

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Determination of the volatile compounds of vegetable oils using an ion-mobility spectrometer

Cited by 23 publications

References 21 publications

Structure of aldehyde cluster ions in the gas phase, according to data from ion mobility spectrometry and ab initio calculations

Structure of aldehyde cluster ions in the gas phase, according to data from ion mobility spectrometry and ab initio calculations

Identification of volatile organic compounds by retention times and ion mobility spectra

Ion mobility spectrometry fingerprints: A rapid detection technology for adulteration of sesame oil

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