Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.chroma.2009.04.042
Titel (primär) Non-porous membrane-assisted liquid-liquid extraction of UV filter compounds from water samples
Autor Rodil, R.; Schrader, S.; Moeder, M.
Journal / Serie Journal of Chromatography A
Erscheinungsjahr 2009
Department ANA
Band/Volume 1216
Heft 24
Seite von 4887
Seite bis 4894
Sprache englisch
Keywords UV filters; Polyethylene membranes; Membrane-assisted liquid-liquid extraction; Atmospheric pressure photoionisation (APPI); Liquid chromatography-mass spectrometry (LC-MS); Water
Abstract A method for the determination of nine UV filter compounds [benzophenone-3 (BP-3), isoamyl methoxycinnamate, 4-methylbenzylidene camphor, octocrylene (OC), butyl methoxydibenzoylmethane, ethylhexyl dimethyl p-aminobenzoate (OD-PABA), ethylhexyl methoxycinnamate (EHMC), ethylhexyl salicylate and homosalate] in water samples was developed and evaluated. The procedure includes non-porous membrane-assisted liquid-liquid extraction (MALLE) and LC-atmospheric pressure photoionisation (APPI)-MS/MS. Membrane bags made of different polymeric materials were examined to enable a fast and simple extraction of the target analytes. Among the polymeric materials tested, low- and high-density polyethylene membranes proved to be well suited to adsorb the analytes from water samples. Finally, 2 cm length tailor-made membrane bags were prepared from low-density polyethylene in order to accommodate 100 ?L of propanol. The fully optimised protocol provides recoveries from 76% to 101% and limits of detection (LOD) between 0.4 ng L-1 (OD-PABA) and 16 ng L-1 (EHMC). The interday repeatability of the whole protocol was below 18%. The effective separation of matrix molecules was proved by only marginal matrix influence during the APPI-MS analysis since no ion suppression effects were observed. During the extraction step, the influence of the matrix was only significant when non-treated wastewater was analysed. The analysis of lake water indicated the presence of seven UV filter compounds included in this study at concentrations between 40 ng L-1 (BP-3) and 4381 ng L-1 (OC). In non-treated wastewater several UV filters were also detected at concentration levels as high as 5322 ng L-1 (OC).
dauerhafte UFZ-Verlinkung
Rodil, R., Schrader, S., Moeder, M. (2009):
Non-porous membrane-assisted liquid-liquid extraction of UV filter compounds from water samples
J. Chromatogr. A 1216 (24), 4887 - 4894