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Graphene oxide bonded fused‐silica fiber for solid‐phase microextraction‐gas chromatography of polycyclic aromatic hydrocarbons in water
Author(s) -
Xu Lili,
Feng Juanjuan,
Li Jubai,
Liu Xia,
Jiang Shengxiang
Publication year - 2012
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201100612
Subject(s) - solid phase microextraction , gas chromatography , chemistry , chromatography , oxide , graphene , polycyclic aromatic hydrocarbon , environmental chemistry , materials science , gas chromatography–mass spectrometry , organic chemistry , mass spectrometry , nanotechnology
A novel chemically bonded graphene oxide/fused‐silica fiber was prepared and applied in solid‐phase microextraction of six polycyclic aromatic hydrocarbons from water samples coupled with gas chromatography. It exhibited high extraction efficiency and excellent stability. Effects of extraction time, extraction temperature, ionic strength, stirring rate and desorption conditions were investigated and optimized in our work. Detection limits to the six polycyclic aromatic hydrocarbons were less than 0.08 μg/L, and their calibration curves were all linear ( R 2 ≥0.9954) in the range from 0.05 to 200 μg/L. Single fiber repeatability and fiber‐to‐fiber reproducibility were less than 6.13 and 15.87%, respectively. This novel fiber was then utilized to analyze two real water samples from the Yellow River and local waterworks, and the recoveries of samples spiked at 1 and 10 μg/L ranged from 84.48 to 118.24%. Compared with other coating materials, this graphene oxide‐coated fiber showed many advantages: wide linear range, low detection limit, and good stability in acid, alkali, organic solutions and at high temperature.