Ionic liquid-based graphene oxide-coated fiber for headspace-solid phase microextraction of polycyclic aromatic hydrocarbons in water samples

Authors : Pelin ERDEM, Paniz TASHAKKORI, Melek MERDİVAN, Serap Seyhan BOZKURT

Pages : 1383-1397

View : 23 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Ionic liquid insert ignore into journalissuearticles values(IL); containing amino and vinyl terminated imidazolium cation and bis[insert ignore into journalissuearticles values(trifluoromethyl);sulfonyl] imide anion-functionalized graphene oxide insert ignore into journalissuearticles values(GO); coating material was prepared and coated on a stainless steel wire by a sol-gel technique for headspace-solid phase microextraction insert ignore into journalissuearticles values(HS-SPME);. Its extraction performance was checked by HS-SPME of polycyclic aromatic hydrocarbons insert ignore into journalissuearticles values(PAHs); coupled to gas chromatography with mass spectrometry insert ignore into journalissuearticles values(GC-MS);. The extraction capability of the IL-functionalized GO-coated fiber was comparable with that of the commercial fibers of polydimethylsiloxane insert ignore into journalissuearticles values(PDMS); and polydimethylsiloxane/carboxen/divinylbenzene insert ignore into journalissuearticles values(PDMS/CAR/DVB);. Under the optimized conditions, such as extraction temperature, extraction time, and salting-out, the proposed HS-SPME-GC-MS method presented a wide working range from 0.003 to 40 $\mu $g L$^{-1\, }$with a correlation coefficient higher than 0.996, low detection limits from 1 to 5 ng L$^{-1}$, and good precision less than 7%. The fiber-to-fiber repeatability was in the range of 0.2%-6.9%. The recoveries for 8 PAHs using the novel and commercial fibers in tap and seawater samples were obtained very close to each other and were in the range of 75.4% to 116.0%.
Keywords : Graphene oxide, ionic liquid, SPME, GC MS, PAH, sol gel, water samples