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毕文韬副教授和David Chen教授课题组在ANALYTICA CHIMICA ACTA发表研究论文

发布时间:17-04-27 13:29:22 文章来源:化科院 浏览次数: [ 字号:


Co-solvent enhanced adsorption with magnetic velvet-like carbon nitride for high efficiency solid phase extraction
Fan, SS (Fan, Shanshan)[ 1 ] ; Zhu, J (Zhu, Jun)[ 1 ] ; Ren, LX (Ren, Lixuan)[ 1 ] ; Wang, M (Wang, Man)[ 1 ] ; Bi, WT (Bi, Wentao)[ 1 ]*(毕文韬); Li, HH (Li, Huihui)[ 1 ] ; Huang, XH (Huang, Xiaohua)[ 1 ] ; Chen, DDY (Chen, David Da Yong)[ 1,2 ]*(David D.Y.Chen)

[ 1 ] Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Coll Chem & Mat Sci, Jiangsu Key Lab Biomed Mat, Nanjing 210023, Peoples R China
[ 2 ] Univ British Columbia, Dept Chem, Vancouver, BC V6T IZ1, Canada

ANALYTICA CHIMICA ACTA,201704,960,63-71

Magnetic velvet-like graphitic carbon nitride (V-g-C3N4/Fe3O4) was used for rapid 1 min extraction of flavonoids from different tea extracts by co-solvent enhanced adsorptive magnetic solid phase extraction. The nanocomposite can interact with flavonoids, in which Fe3O4 provide hydrogen bond and V-g-C3N4 has hydrophobic and pi-pi interaction to promote adsorption. The enhanced adsorptive magnetic solid phase extraction method is developed with the addition of a co-solvent (water) to dramatically change the solvent environment, which enhanced the speed of movement of target compounds from the solvent to the sorbent and increase the adsorption capacity. The synergistic effects improved the extraction rate of flavonoids with excellent reproducibility (88.2-107.2%), sensitivity (limits of detection (S/N = 3): 0.075 -0.1 mu g/mL) and recoveries (88.2-107.2%). This study demonstrated the potential to apply this method for various target analytes from complex sample matrices.


文章链接:
http://www.sciencedirect.com/science/article/pii/S0003267017300995
 


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