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http://dx.doi.org/10.5012/bkcs.2014.35.4.1011

Octadecyl-Modified Graphene as an Adsorbent for Hollow Fiber Liquid Phase Microextraction of Chlorophenols from Honey  

Sun, Meng (Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei)
Cui, Penglei (Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei)
Ji, Shujing (Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei)
Tang, Ranxiao (Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei)
Wu, Qiuhua (Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei)
Wang, Chun (Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei)
Wang, Zhi (Key Laboratory of Bioinorganic Chemistry, College of Science, Agricultural University of Hebei)
Publication Information
Bulletin of the Korean Chemical Society / v.35, no.4, 2014 , pp. 1011-1015 More about this Journal
Abstract
Octadecyl-modified graphene (graphene-C18) was fabricated and used as adsorbent in hollow fiber liquid phase microextraction (HF-LPME) for the first time. The extraction performance of graphene-C18 reinforced HF-LPME was evaluated using chlorophenols as model analytes. The factors affecting the extraction efficiency, such as extraction time, pH of the sample solution, agitation rate, the concentration of graphene-C18 and salt addition were optimized. After the graphene-C18 reinforced HF-LPME of the chlorophenols from honey sample, the analytes were separated and determined by high-performance liquid chromatography. The linearity was observed in the range of 5.0-200.0 ng $g^{-1}$ for 2-chlorophenol and 3-chlorophenol, and 2.0-200.0 ng $g^{-1}$ for 2,3-dichlorophenol and 3,4-dichlorophenol, respectively. The limits of detection (S/N = 3) of the method were lower than 1.5 ng $g^{-1}$. The recoveries of the method were between 88% and 108%. The method is simple, sensitive and has been resoundingly applied to analysis of chlorophenols in honey samples.
Keywords
Hollow fiber liquid phase microextraction; Graphene-C18; High performance liquid chromatography; Chlorophenols; Honey sample;
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