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Author Wang, Yan ♦ Huang, Bin-Bin ♦ Dai, Wan-Lin ♦ Xu, Bin ♦ Wu, Tian-Liang ♦ Ye, Jia-Ping ♦ Ye, Jian-Shan
Source J-STAGE
Content type Text
Publisher The Japan Society for Analytical Chemistry
Language English
Subject Keyword Capsaicin determination ♦ poly(sodium 4-styrenesulfonate) ♦ graphite ♦ screen-printed electrode ♦ differential pulse stripping voltammetry
Abstract A sensitive capsaicin sensor was constructed based on a poly(sodium 4-styrenesulfonate) functionalized graphite modified screen printed electrode (PSS-Grp/SPE) in this study. The PSS-Grp and poly(diallyldimethylammonium chloride) functionalized graphite (PDDA-Grp) were easily synthesized by interacting Grp with PSS and PDDA through sonication, and resulted in negative and with positive charges on the surface, respectively. The prepared PSS-Grp and PDDA-Grp were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet and visible spectroscopy (UV-vis). The electrochemical performance of PSS-Grp in a 50 μM capsaicin solution presented a current density of 33 μA $cm^{−2},$ which was much higher than the PDDA-Grp of 1.5 μA $cm^{−2}.$ Our study showed that capsaicin could interact better with strong negative charges on the PSS-Grp/SPE surface to give a higher electrochemical response. The direct electrochemical sensing of capsaicin was achieved at PSS-Grp/SPE using differential pulse stripping voltammetry (DPSV) under the optimized conditions.
ISSN 09106340
Learning Resource Type Article
Publisher Date 2017-07-10
e-ISSN 13482246
Journal Analytical Sciences(analsci)
Volume Number 33
Issue Number 7
Page Count 7
Starting Page 793
Ending Page 799


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