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An Investigation on Anti-reducing Effect of CaO in Barium Titanate Based Ceramic
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Nitrite Sensors Based on Gold Particles and Polyaniline Modified Electrodes

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Abstract:

A nitrite sensor based on a gold particles/polyaniline modified glassy carbon electrode (Au/PAni/GCE) was devoped by electrochemical method. The electrocatalytic oxidation of nitrite at Au/PAni/GCE was studied by cyclic voltammetry. The experimental parameters were optimized, and a voltammetric method for determining nitrite was developed. In phosphate buffered solution(PBS) of pH 3.0, the oxidation peak current of nitrite is proportional to the concentration of nitrite over the range of 4.0×10-7～5.0×10-3mol/L with the detection limit of 2.0×10-7mol/L (r=0.9992). The presented methods of determing nitrite exhibited high sensitivity and good reproducibility.

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Advanced Materials, CEAM 2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

2466-2469

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.2466

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Online since:

May 2011

Authors:

Yu Cui Hao, Yan Juan Liu, Bin Hao

Keywords:

Electrochemical Sensor, Gold Particles, Nitrite, Polyaniline (PANI)

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