title: Monofluorinated polycyclic aromatic hydrocarbons as internal standards to monitor trace enrichment and desorption of their parent compounds during solid-phase extraction.
abstract: Solid-phase extraction (SPE) is an established sample-preparation technique for clean-up procedures of polycyclic aromatic hydrocarbons (PAHs). The suitability of monofluorinated polycyclic aromatic hydrocarbons (F-PAHs) as a novel set of internal standards, was tested for two widely used SPE sorbents, octyl-bonded silica and styrene-divinylbenzene copolymer. The elution profiles of eight F-PAHs and their parent PAHs, taken from the priority pollutant list of the US-Environmental Protection Agency, were compared for demineralized water and waste water. In both instances, the match of the elution profiles was exceptionally close. The eight F-PAHs and the corresponding PAHs were determined by reversed-phase liquid chromatography using acetonitrile-water gradient elution with UV detection at 254 nm. The UV spectra of the F-PAHs show a small bathochromic shift compared with the parent PAHs.
authors.affiliation: Free University, Department of Analytical Chemistry and Applied Spectroscopy, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands. info@f-pahs.org. info@f-pahs.org
authors.forename: G
authors.initials: G
authors.lastname: Luthe
authors.forename: J
authors.initials: J
authors.lastname: Broeders
authors.forename: U A
authors.initials: UA
authors.lastname: Brinkman
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods; D005461:Fluorine / Q000737:chemistry*; D011083:Polycyclic Compounds / Q000737:chemistry*; D012015:Reference Standards; D013056:Spectrophotometry, Ultraviolet
chemical_list: D011083:Polycyclic Compounds; D005461:Fluorine