Journal
MICROCHIMICA ACTA
Volume 184, Issue 7, Pages 2171-2180Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-017-2233-0
Keywords
Polycyclic aromatic hydrocarbons; Gas chromatography; Mass spectrometry; Single layer g-C3N4; SPME; Cosmetics; Sol-gel
Categories
Funding
- National Natural Science Foundation of China [31471643, 31571925, 31671930]
- Hebei Double First Class Discipline Construction Foundation for the Discipline of Food Science and Engineering of Hebei Agricultural University [2016SPGCA18]
- Natural Science Foundation of Hebei Province [B2016204136, B2016204146, B2017204025]
- Scientific and Technological Research Foundation of the Department of Education of Hebei Province [ZD2016085]
- Innovation Talents Research Foundation of Agricultural University of Hebei
- Natural Science Foundation of Agricultural University of Hebei [ZD201507, LG201607]
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The authors describe a three-dimensional single layer graphitic carbon nitride-modified graphene composite (g-C3N4@G) deposited on a stainless steel wire by a sol-gel technique. The coated fiber was applied to direct immersion solid-phase microextraction of trace levels of polycyclic aromatic hydrocarbons (PAHs) from cosmetics samples prior to their determination by gas chromatography with mass spectrometry (GC-MS). Due to pi stacking interaction and hydrophobic interaction between the g-C3N4@G coating and the analytes (naphthalene, acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene), the fiber displays an excellent adsorption capability for the analytes. Under optimized conditions, the method has a wide linear range, low LODs (from 1.0 to 2.0 ng L-1), good repeatability and high recoveries. It was successfully applied to the determination of PAHs in cosmetics. The g-C3N4@G fiber also exhibited good durability.
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