title: A rapid space-resolved solid-phase microextraction method as a powerful tool to determine contaminants in wine based on their volatility.
abstract: A novel space-resolved solid phase microextraction (SR-SPME) technique was developed to facilitate simultaneously analyte monitoring within heterogeneous samples. Graphene (G) and graphene oxide (GO) were coated separately to the segmented fibers which were successfully used for the solid-phase microextraction of two contaminants with dramatically different volatility: 2,4,6-trichloroanisole (TCA) and dibutyl phthalate (DBP). The space-resolved fiber showed good precision (5.4%, 6.8%), low detection limits (0.3ng/L, 0.3ng/L), and wide linearity (1.0-250.0ng/L, 1.0-250.0ng/L) under the optimized conditions for TCA and DBP, respectively. The method was applied to simultaneous analysis of the two contaminates with satisfactory recoveries, which were 96.96% and 98.20% for wine samples.
authors.affiliation: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China. Electronic address: liumin@hust.edu.cn.
authors.forename: Min
authors.initials: M
authors.lastname: Liu
authors.affiliation: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
authors.forename: Qing-Qing
authors.initials: QQ
authors.lastname: Peng
authors.affiliation: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
authors.forename: Yu-Feng
authors.initials: YF
authors.lastname: Chen
authors.affiliation: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Tang
authors.affiliation: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Feng
mesh_terms: D005506:Food Contamination / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D052617:Solid Phase Microextraction / Q000379:methods*; D014835:Volatilization; D014920:Wine / Q000032:analysis*
keywords: 2,4,6-Trichloroanisole; Dibutyl phthalate; GC–MS; Solid-phase microextraction; Wine