Nitrite Sensors Based on Gold Particles and Polyaniline Modified Electrodes

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

2466-2469

DOI:

10.4028/www.scientific.net/AMR.239-242.2466

Citation:

Y. C. Hao et al., "Nitrite Sensors Based on Gold Particles and Polyaniline Modified Electrodes", Advanced Materials Research, Vols. 239-242, pp. 2466-2469, 2011

Online since:

May 2011

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Price:

$35.00

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