title: Graphene-based solid-phase extraction disk for fast separation and preconcentration of trace polycyclic aromatic hydrocarbons from environmental water samples.
abstract: Graphene has great potentials for the use in sample preparation due to its ultra high specific surface area, superior chemical stability, and excellent thermal stability. In our work, a novel graphene-based SPE disk was developed for separation and preconcentration of trace polycyclic aromatic hydrocarbons from environmental water samples. Based on the strong π-π stacking interaction between the analytes and graphene, the analytes extracted by graphene were eluted by cyclohexane and then determined by GC-MS. Under the optimized conditions, high flow rate (30 mL/min) and sensitivity (0.84-13 ng/L) were achieved. The proposed method was successfully applied to the analysis of real environmental water samples with recoveries ranging from 72.8 to 106.2%. Furthermore, the property of anticlogging and reusability was also improved. This work reveals great potentials of graphene-based SPE disk in environmental analytical.
authors.affiliation: College of Chemical and Environment Engineering, Laboratory of Fiber Materials and Modern Textile, Qingdao University, Shandong, China. wangzonghua@qdu.edu.cn
authors.forename: Zonghua
authors.initials: Z
authors.lastname: Wang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Han
authors.forename: Jianfei
authors.initials: J
authors.lastname: Xia
authors.forename: Linhua
authors.initials: L
authors.lastname: Xia
authors.forename: Mingyu
authors.initials: M
authors.lastname: Ding
authors.forename: Jie
authors.initials: J
authors.lastname: Tang
mesh_terms: D006108:Graphite / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry* / Q000302:isolation & purification; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D006108:Graphite