A novel nitrite sensor based on graphene/polypyrrole/chitosan nanocomposite modified glassy carbon electrode

The Analyst
Daixin YeXiao Liu


A novel nitrite sensor was fabricated based on a graphene/polypyrrole/chitosan nanocomposite film modified glassy carbon electrode. The nanocomposite film was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and Raman spectroscopy. The electron transfer behaviour of the modified electrodes was investigated in [Fe(CN)(6)](3-)/(4-) redox probe using cyclic voltammetry and electrochemical impedance spectroscopy. Differential pulse voltammetry and amperometry were used to study the electrochemical properties of the proposed sensor. Under optimum conditions, the sensor exhibited good reproducibility and stability for nitrite determination. Linear response was obtained in the range of 0.5-722 μM with a detection limit of 0.1 μM (S/N = 3) for nitrite determination.


Sep 1, 1977·Toxicology and Applied Pharmacology·J J KammW J Mergens
Jul 7, 1972·Science·I A Wolff, A E Wasserman
Jan 3, 1970·Nature·W Lijinsky, S S Epstein
Sep 15, 2005·Chemical Communications : Chem Comm·Takamitsu HiratsuKazuya Yamaguchi
May 26, 2006·The Journal of Physical Chemistry. B·Jeff N SoderbergViola I Birss
Oct 31, 2006·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Steve M Helmke, Mark W Duncan
Mar 9, 2007·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Marijke GrauPetra Kleinbongard
Aug 1, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Yousheng TaoKatsumi Kaneko
Jul 8, 2008·Journal of Colloid and Interface Science·Moonjung Choi, Jyongsik Jang
Jan 13, 2011·Analytical and Bioanalytical Chemistry·Peng MiaoYongmei Yin


Oct 9, 2012·Chemistry : a European Journal·Amit A Vernekar, Govindasamy Mugesh

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