title: Use of headspace sorptive extraction coupled to gas chromatography-mass spectrometry for the analysis of volatile polycyclic aromatic hydrocarbons in herbal infusions.
abstract: A solvent-free method is described for the determination of 10 volatile polycyclic aromatic hydrocarbons (PAHs), considered as priority pollutants by the EU, in different herbal infusions using headspace sorptive extraction (HSSE) and gas chromatography-mass spectrometry (GC-MS). The parameters affecting both the extraction and thermal desorption steps in the HSSE were optimized by means of Plackett-Burman designs. Ten millilitres of the herbal infusion was submitted to the HSSE preconcentration in the presence of salt for 4h at 88 °C. The use of d(10)-phenanthrene as internal standard not only improved the repeatability of the method but allowed quantification of the samples against external aqueous standards. Detection limits ranged between 11 and 26 ng L(-1).
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30071 Murcia, Spain.
authors.forename: J I
authors.initials: JI
authors.lastname: Cacho
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30071 Murcia, Spain.
authors.forename: N
authors.initials: N
authors.lastname: Campillo
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30071 Murcia, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Viñas
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, E-30071 Murcia, Spain. Electronic address: hcordoba@um.es.
authors.forename: M
authors.initials: M
authors.lastname: Hernández-Córdoba
mesh_terms: D000327:Adsorption; D001628:Beverages / Q000032:analysis*; D020843:Chamomile / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D015203:Reproducibility of Results; D012624:Seaweed / Q000737:chemistry; D012997:Solvents
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012997:Solvents
keywords: Gas chromatography–mass spectrometry (GC–MS); Headspace sorptive extraction (HSSE); Herbal infusions; Polycyclic aromatic hydrocarbons (PAHs); Tea