title: Determination of polycyclic aromatic hydrocarbons in soy isoflavone nutraceutical products by gas chromatography coupled to triple quadrupole tandem mass spectrometry.
abstract: Thirteen polycyclic aromatic hydrocarbons have been determined in soy-based nutraceutical products. First, an optimization of extraction procedure was performed, and a solid-liquid extraction assisted by sonication and a dilute and shoot procedure were compared, selecting the dilute and shoot approach for the extraction of target compounds, utilizing a mixture of acetone/n-hexane (1:1 v/v) as extractant solvent. After this, a clean-up step was needed bearing in mind the complexity of these matrices. Dispersive solid-phase extraction, using a mixture of C18 and Zr-Sep+ (25 mg/mL each) was used. The separation was achieved by gas chromatography and detection with triple quadrupole tandem mass spectrometry. For quantification purposes, matrix-matched calibration was used. The validation was applied at three concentration levels (20, 100 and 250 μg/kg), obtaining recoveries between 70 and 120% and precision values equal to or lower than 23%. Limits of detection and quantification were below 8 and 20 μg/kg, respectively. The method was applied in 11 samples, detecting five polycyclic aromatic hydrocarbons at concentrations ranging from 4.1 to 18.5 μg/kg.
authors.affiliation: Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Agricultural and Food Biotechnology (BITAL), University of Almería, Agrifood Campus of International Excellence, Almería, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Ruiz-Delgado
authors.affiliation: Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Agricultural and Food Biotechnology (BITAL), University of Almería, Agrifood Campus of International Excellence, Almería, Spain.
authors.forename: Gerardo
authors.initials: G
authors.lastname: Martínez-Domínguez
authors.affiliation: Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Agricultural and Food Biotechnology (BITAL), University of Almería, Agrifood Campus of International Excellence, Almería, Spain.
authors.forename: Roberto
authors.initials: R
authors.lastname: Romero-González
authors.affiliation: Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Agricultural and Food Biotechnology (BITAL), University of Almería, Agrifood Campus of International Excellence, Almería, Spain.
authors.forename: Rosalía
authors.initials: R
authors.lastname: López-Ruiz
authors.affiliation: Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Agricultural and Food Biotechnology (BITAL), University of Almería, Agrifood Campus of International Excellence, Almería, Spain.
authors.forename: Antonia Garrido
authors.initials: AG
authors.lastname: Frenich
mesh_terms: D019587:Dietary Supplements / Q000032:analysis*; D007529:Isoflavones / Q000737:chemistry*; D057230:Limit of Detection; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D013025:Glycine max / Q000737:chemistry*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D007529:Isoflavones; D011084:Polycyclic Aromatic Hydrocarbons
keywords: Gas chromatography; Mass spectrometry; Nutraceuticals; Polycyclic aromatic hydrocarbons; Soy