title: Solid-phase microextraction for qualitative and quantitative determination of migrated degradation products of antioxidants in an organic aqueous solution.
abstract: Low molecular weight aromatic substances may migrate out from plastic packaging to their contents, especially if they consist of organic aqueous solutions or oils. It is, therefore, extremely important to be able to identify and quantify any migrated substances in such solutions, even at very low concentrations. We have in this work investigated and evaluated the use of solid-phase microextraction for the specific task of extraction from an organic aqueous solution such as a simulated pharmaceutical solution consisting of 10 vol.% ethanol in water. The goal was furthermore to investigate the possibility of simultaneously identifying and quantifying the substances in spite of differences in their chemical structures. Methods were developed and evaluated for extraction both with direct sampling and with headspace sampling. Difficulties appeared due to the ethanol in the solution and the minute amounts of substances present. We have shown that a simultaneous quantification of migrated low molecular weight degradation products of antioxidants using only one fibre is possible if the extraction method and temperature are adjusted in relation to the concentration levels of the analytes. Comparions were made with solid-phase extraction.
authors: Department of Fibre and Polymer Technology, Royal Institute of Technology (KTH), Teknikringen 56-58, S-100 44 Stockholm, Sweden.
authors: Lina
authors: L
authors: Burman
authors: Ann-Christine
authors: AC
authors: Albertsson
authors: Anders
authors: A
authors: Höglund
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000737:chemistry*; D005591:Chemical Fractionation / Q000379:methods; D002851:Chromatography, High Pressure Liquid; D020099:Coated Materials, Biocompatible; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004349:Drug Packaging; D008401:Gas Chromatography-Mass Spectrometry; D008832:Microchemistry / Q000379:methods; D011126:Polypropylenes / Q000737:chemistry; D012828:Silicones / Q000737:chemistry; D012996:Solutions / Q000737:chemistry; D014753:Vinyl Compounds / Q000737:chemistry
chemical_list: D000975:Antioxidants; D020099:Coated Materials, Biocompatible; D004129:Dimethylpolysiloxanes; D011126:Polypropylenes; D012828:Silicones; D012996:Solutions; D014753:Vinyl Compounds; C013830:baysilon; C004985:divinyl benzene