Journal
JOURNAL OF SEPARATION SCIENCE
Volume 37, Issue 24, Pages 3691-3698Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201400843
Keywords
Gas chromatography; Graphene oxide; Ionic liquids; Solid-phase microextraction; Stainless-steel wire
Categories
Funding
- National Natural Science Foundation of China (NSFC) [21205048, 21405061, 21345005]
- Shandong Provincial Natural Science Foundation of China [ZR2012BQ018]
- Natural Science Foundation of University of Jinan [XKY1313]
Ask authors/readers for more resources
Graphene oxide was bonded onto a silver-coated stainless-steel wire using an ionic liquid as the crosslinking agent by a layer-by-layer strategy. The novel solid-phase microextraction fiber was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy and Raman microscopy. A multilayer graphene oxide layer was closely coated onto the supporting substrate. The thickness of the coating was about 4 mu m. Coupled with gas chromatography, the fiber was evaluated using five polycyclic aromatic hydrocarbons (fluorene, anthracene, fluoranthene, 1,2-benzophenanthrene, and benzo(a) pyrene) as model analytes in direct-immersionmode. Themain conditions (extraction time, extraction temperature, ionic strength, and desorption time) were optimized by a factor-by-factor optimization. The as-established method exhibited a wide linearity range (0.5-200 mu g/L) and low limits of determination (0.05-0.10 mu g/L). It was applied to analyze environmental water samples of rain and river water. Three kinds of the model analytes were quantified and the recoveries of samples spiked at 10 mu g/L were in the range of 92.3-120 and 93.8-115%, respectively. The obtained results indicated the fiber was efficient for solid-phase microextraction analysis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available