Journal
JOURNAL OF SEPARATION SCIENCE
Volume 36, Issue 11, Pages 1834-1842Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201300186
Keywords
Gas chromatography mass spectrometry; Graphene; Polycyclic aromatic hydrocarbons; Solid-phase extraction disk
Categories
Funding
- National Natural Science Foundation of China [20975056, 81102411, 21275082, 21075074, 21111140014]
- Natural Science Foundation of Shandong [ZR2011BZ004, ZR2011BQ005]
- Japan Society for the Promotion of Science
- State Key Laboratory of Analytical Chemistry for Life Science [SKLACLS1110]
- National Key Basic Research Development Program of China (973 special preliminary study plan) [2012CB722705]
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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 - 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.
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