Journal
JOURNAL OF SEPARATION SCIENCE
Volume 38, Issue 12, Pages 2132-2139Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201500002
Keywords
Flavonoids; Graphene; Matrix solid-phase dispersion; Murraya panaculata; Traditional Chinese medicine
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Funding
- National Nature Science Foundation of China [31201295]
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In this study, graphene-encapsulated silica was synthesized by a hydrothermal reduction strategy. The presence of silica in graphene was identified by Fourier-transform infrared spectrometry, X-ray diffraction and scanning electron microscopy. The graphene-encapsulated silica subsequently was used as adsorbent for matrix solid-phase dispersion extraction of poly-methoxylated flavonoids from the dried leaves of Murraya panaculata (L.) Jack. Compared with the other adsorbents (graphene, silica gel, C-18 silica, neutral alumina, diatomaceous earth) and without any adsorbents, better results were obtained. Then a method for analysis of poly-methoxylated flavonoids was established by coupling matrix solid-phase dispersion extraction with ultra high performance liquid chromatography and UV detection. Compared with reflux extraction and ultrasonic extraction, the proposed method is quicker, more efficient and more environmental protection. Less than 10 min is needed from extraction to detection.
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