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.
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8.
ChengC.Y.YuanC.H.ChengS.C.HuangM.Z.ChangH.C.ChengT.L.YehC.S. and ShieaJ., “Electrospray-assisted laser desorption/ionization mass spectrometry for continuously monitoring the states of ongoing chemical reactions in organic or aqueous solution under ambient conditions”, Anal. Chem.80, 7699 (2008). doi: https://dx-doi-org.web.bisu.edu.cn/10.1021/ac800952e
9.
NemesP. and VertesA., “Laser ablation electrospray ionization for atmospheric pressure, in vivo, and imaging mass spectrometry”, Anal. Chem.79, 8098 (2007). doi: https://dx-doi-org.web.bisu.edu.cn/10.1021/ac071181r
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VaclavikL.CajkaT.HrbekV. and HajslovaJ., “Ambient mass spectrometry employing direct analysis in real time (DART) ion source for olive oil quality and authenticity assessment”, Anal. Chim. Acta645, 56 (2009). doi: https://dx-doi-org.web.bisu.edu.cn/10.1016/j.aca.2009.04.043
14.
Gomez-ArizaJ.L.Arias-BorregoA. and Garcia-BarreraT., “Use of flow injection atmospheric pressure photoionization quadrupole time-of-flight mass spectrometry for fast olive oil fingerprinting”, Rapid Commun. Mass Spectrom.20, 1181 (2006). doi: https://dx-doi-org.web.bisu.edu.cn/10.1002/rcm.2432
15.
ActerT.ChoY.KimS.AhmedA.KimB. and KimS., “Optimization and application of APCI hydrogen-deuterium exchange mass spectrometry (HDX MS) for the speciation of nitrogen compounds”, J. Am. Soc. Mass Spectrom.26, 1522 (2015). doi: https://dx-doi-org.web.bisu.edu.cn/10.1007/s13361-015-1166-2
16.
IslamA.KimD.YimU.H.ShimW.J. and KimS., “Structure-dependent degradation of polar compounds in weathered oils observed by atmospheric pressure photo-ionization hydrogen/deuterium exchange ultrahigh resolution mass spectrometry”, J. Hazard. Mater.296, 93 (2015). doi: https://dx-doi-org.web.bisu.edu.cn/10.1016/j.jhazmat.2015.04.042
17.
KostyukevichY.KononikhinA.KukaevE.ShieaJ.PopovI. and NikolaevE., “Letter: Supermetallization of peptides and proteins with tetravalent metal Th(IV)”, Eur. J. Mass Spectrom.22, 39 (2016). doi: https://dx-doi-org.web.bisu.edu.cn/10.1255/ejms.1405
18.
KostyukevichY.KononikhinA.PopovI. and NikolaevE., “Letter: Observation of the O-16/O-18 exchange during electrospray ionization”, Eur. J. Mass Spectrom.21, 109 (2015). doi: https://dx-doi-org.web.bisu.edu.cn/10.1255/ejms.1373
19.
KostyukevichY.KononikhinA.PopovI.StarodubtzevaN.PekovS.KukaevE.IndeykinaM. and NikolaevE., “Analytical potential of the in-electrospray ionization source hydrogen/deuterium exchange for the investigation of oligonucleotides”, Eur. J. Mass Spectrom.21, 59 (2015). doi: https://dx-doi-org.web.bisu.edu.cn/10.1255/ejms.1330
20.
KostyukevichY.KononikhinA.ZherebkerA.PopovI.PerminovaI. and NikolaevE., “Enumeration of non-labile oxygen atoms in dissolved organic matter by use of (16) O/(18)O exchange and Fourier transform ion-cyclotron resonance mass spectrometry”, Anal. Bioanal. Chem.406, 6655 (2014). doi: https://dx-doi-org.web.bisu.edu.cn/10.1007/s00216-014-8097-9
21.
KostyukevichYuryKononikhinAlexeyPopovIgorStarodubtzevaNataliaKukaevEugene and NikolaevE., “Letter: Separation of tautomeric forms of [2-nitrophloroglucinol-H]− by in-ESI source hydrogen/deuterium exchange approach.”, Eur. J. Mass Spectrom.20, 345 (2014). doi: https://dx-doi-org.web.bisu.edu.cn/10.1255/ejms.1282
