title: Rapid analysis of six phthalate esters in wine by ultrasound-vortex-assisted dispersive liquid-liquid micro-extraction coupled with gas chromatography-flame ionization detector or gas chromatography-ion trap mass spectrometry.
abstract: An Ultrasound-Vortex-Assisted Dispersive Liquid-Liquid Micro-Extraction (USVADLLME) procedure coupled with Gas Chromatography-Flame Ionization Detector (GC-FID) or Gas Chromatography-Ion Trap Mass Spectrometry (GC-IT/MS) is proposed for rapid analysis of six phthalate esters in hydroalcoholic beverages (alcohol by volume, alc vol(-1), ≤40%). Under optimal conditions, the enrichment factor of the six analytes ranges from 220- to 300-fold and the recovery from 85% to 100.5%. The limit of detection (LOD) and limit of quantification (LOQ) are ≥0.022 μg L(-1) and ≥0.075 μg L(-1), respectively. Intra-day and inter-day precisions expressed as relative standard deviation (RSD), are ≤8.2% and ≤7.0%, respectively. The whole proposed methodology has demonstrated to be simple, reproducible and sensible for the determination of trace phthalate esters in red and white wine samples.
authors.affiliation: Dipartimento di Agricoltura, Ambiente e Alimenti, Università del Molise, via de Sanctis, Campobasso, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Cinelli
authors.forename: Pasquale
authors.initials: P
authors.lastname: Avino
authors.forename: Ivan
authors.initials: I
authors.lastname: Notardonato
authors.forename: Angela
authors.initials: A
authors.lastname: Centola
authors.forename: Mario Vincenzo
authors.initials: MV
authors.lastname: Russo