NDLI: Electroanalysis of nicotine at an electroreduced carboxylated graphene modified glassy carbon electrode

Content Provider	Royal Society of Chemistry (RSC)
Author	Xie, Qingji Chao, Long Xiao, Hualing Chen, Chao Yin, Donghong Wang, Wen Wen, Jianhui Yan, Hongling Liu, Jiali Sun, Lingen Yan, Qingping
Copyright Year	2015
Abstract	A carboxylated graphene (CG) modified glassy carbon electrode (GCE) was prepared by cast-coating a CG solution on a GCE surface, for quantitative analysis of nicotine based on cyclic voltammetry after potentiostatic enrichment of nicotine at −1.1 V for 240 s in 0.1 M KH2PO4–Na2HPO4 buffer solution (pH 7.0). At this enrichment potential, partially electroreduced CG (ERCG) was obtained, as characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy and electrochemistry techniques. The oxidation peak current of nicotine at the ERCG/GCE after a semi-derivative treatment responded linearly to nicotine concentration from 2 to 5 μM and from 5 to 60 μM, with a limit of detection of 0.1 μM. The ERCG/GCE gave analytical performance superior to that at a bare GCE, and the semi-derivative treatment notably improved the signal resolution. The ERCG/GCE was used to determine nicotine in real tobacco samples, with recoveries over 95%.
Starting Page	1147
Ending Page	1153
Page Count	7
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	7
Issue Number	3
Journal	Analytical Methods
DOI	10.1039/c4ay01872a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Infrared spectroscopy Electrode Tobacco smoking Monopotassium phosphate Photoemission spectroscopy Buffer solution Raman spectroscopy Carbon Scanning electron microscope Cyclic voltammetry Fourier Graphene PH Electrochemistry Raman X-ray photoelectron spectroscopy Nicotine
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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