Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.chroma.2009.10.058
Titel (primär) Pressurised membrane-assisted liquid extraction of UV filters from sludge
Autor Rodil, R.; Schrader, S.; Moeder, M.
Quelle Journal of Chromatography A
Erscheinungsjahr 2009
Department ANA
Band/Volume 1216
Heft 51
Seite von 8851
Seite bis 8858
Sprache englisch
Keywords UV filters; Polyethylene membranes; Pressurised membrane-assisted liquid extraction; Atmospheric pressure photoionisation (APPI); Liquid chromatography-mass spectrometry (LC-MS); Sludge
Abstract A method for the determination of 11 UV-filter compounds in sludge has been developed and evaluated. The procedure includes the use of non-porous polymeric membranes in combination with pressurised liquid extraction (PLE). Firstly, the solid sample, wetted with the extraction solvent, was enclosed into tailor-made bags prepared with low density polyethylene. Secondly, these packages were submitted to a conventional PLE (70 °C, 4 cycles of 5 min static time). Finally, the analytes were determined by liquid chromatography-atmospheric pressure photoionisation-tandem mass spectrometry. The main advantage of this procedure is the reduction of time, solvent and labour effort ought to the combination of extraction and clean-up in a single step. Although the extraction is not quantitative (thus, standard addition is recommended for quantification) selectivity is clearly gained using the membrane as a consequence of the differences of permeation and transport through the membrane between the analytes and other sample matrix components. The optimised protocol provides limits of detection ranging from 0.3 ng g-1 (ethylhexyl dimethyl p-aminobenzoate (OD-PABA)) to 25 ng g-1 (ethylhexyl triazone (EHT)) with only 0.5 g of sludge sample. All the studied UV filters were found in the samples at concentration levels between 1.4 and 2479 ng g-1, emphasising the high adsorption potential of this kind of environmental pollutants onto solid samples such as sludge. Also, this method has permitted the determination of seven of the studied UV filters in sludge samples for the first time.
dauerhafte UFZ-Verlinkung
Rodil, R., Schrader, S., Moeder, M. (2009):
Pressurised membrane-assisted liquid extraction of UV filters from sludge
J. Chromatogr. A 1216 (51), 8851 - 8858 10.1016/j.chroma.2009.10.058