title: A simple method for the enrichment of bisphenols using boron nitride.
abstract: A simple solid-phase extraction method for the enrichment of 5 bisphenol derivatives using hexagonal boron nitride (BN) was developed. BN was applied to concentrate bisphenol derivatives in spiked water samples and the compounds were analyzed using HPLC coupled to fluorescence detection. The effect of pH and organic solvents on the extraction efficiency was investigated. An enrichment factor up to 100 was achieved without evaporation and reconstitution. The developed method was applied for the determination of bisphenol A migrated from some polycarbonate plastic products. Furthermore, bisphenol derivatives were analyzed in spiked and non-spiked canned food and beverages. None of the analyzed samples exceeded the migration limit set by the European Union of 0.6mg/kg food. The method showed good recovery rates ranging from 80% to 110%. Validation of the method was performed in terms of accuracy and precision. The applied method is robust, fast, efficient and easily adaptable to different analytical problems.
authors.affiliation: Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
authors.forename: Martin
authors.initials: M
authors.lastname: Fischnaller
authors.affiliation: Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria. Electronic address: rania.bakry@uibk.ac.at.
authors.forename: Rania
authors.initials: R
authors.lastname: Bakry
authors.affiliation: Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; ADSI-Austrian Drug Screening Institute, Innrain 66A, Innsbruck, Austria.
authors.forename: Günther K
authors.initials: GK
authors.lastname: Bonn
mesh_terms: D001559:Benzhydryl Compounds / Q000737:chemistry*; D001896:Boron Compounds / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D010636:Phenols / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D001896:Boron Compounds; D010636:Phenols; C017282:boron nitride; C006780:bisphenol A; D000098826:Bisphenol A Compounds
keywords: Bisphenols; Boron nitride; Foodstuff; Migration; Recoveries; Solid-phase extraction