Article (Scientific journals)
Improvement of mineral oil saturated and aromatic hydrocarbons determination in edible oil by liquid-liquid-gas chromatography with dual detection
Zoccali, M.; Barp, L.; Beccaria, M. et al.
2016In Journal of Separation Science, 39 (3), p. 623-631
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Keywords :
Liquid-gas chromatography; Mineral oil aromatic hydrocarbons; Mineral oil saturated hydrocarbons; Olefins; Aromatic compounds; Aromatic hydrocarbons; Aromatization; Chromatography; Contamination; Gas oils; Hydrocarbons; Ionization; Ionization of gases; Ionization of liquids; Isomers; Liquefied gases; Liquid chromatography; Liquids; Metal ions; Mineral oils; Minerals; Oils and fats; Olive oil; Chromatography columns; Flame ionization detection; Flame ionization detectors; Food contaminants; Hydrocarbon contamination; Saturated hydrocarbons; Triple-quadrupole mass spectrometer; Gas chromatography; Article; Chromatography, Gas; Chromatography, Liquid; Hydrocarbons, Aromatic; Mineral Oil
Abstract :
[en] Mineral oils, which are mainly composed of saturated hydrocarbons and aromatic hydrocarbons, are widespread food contaminants. Liquid chromatography coupled to gas chromatography with flame ionization detection represents the method of choice to determine these two families. However, despite the high selectivity of this technique, the presence of olefins (particularly squalene and its isomers) in some samples as in olive oils, does not allow the correct quantification of the mineral oil aromatic hydrocarbons fraction, requiring additional off-line tools to eliminate them. In the present research, a novel on-line liquid chromatography coupled to gas chromatography method is described for the determination of hydrocarbon contamination in edible oils. Two different liquid chromatography columns, namely a silica one (to retain the bulk of the matrix) and a silver-ion one (which better retains the olefins), were coupled in series to obtain the mineral oil aromatic hydrocarbons hump free of interfering peaks. Furthermore, the use of a simultaneous dual detection, flame ionization detector and triple quadrupole mass spectrometer allowed us not only to quantify the mineral oil contamination, but also to evaluate the presence of specific markers (i.e. hopanes) to confirm the petrogenic origin of the contamination. © 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Disciplines :
Food science
Chemistry
Author, co-author :
Zoccali, M.;  Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy, Chromaleont S.r.l., C/o Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy
Barp, L.;  Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy
Beccaria, M.;  Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy, Chromaleont S.r.l., C/o Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy
Sciarrone, D.;  Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy
Purcaro, Giorgia  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Mondello, L.;  Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy, Chromaleont S.r.l., C/o Scienze Chimiche, Biologiche, Farmaceutiche Ed Ambientali Department, University of Messina, Messina, Italy, University Campus Bio-Medico of Rome, Roma, Italy
Language :
English
Title :
Improvement of mineral oil saturated and aromatic hydrocarbons determination in edible oil by liquid-liquid-gas chromatography with dual detection
Publication date :
2016
Journal title :
Journal of Separation Science
ISSN :
1615-9306
eISSN :
1615-9314
Publisher :
Wiley-VCH Verlag
Volume :
39
Issue :
3
Pages :
623-631
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 January 2019

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