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Sensors 2003, 3(8), 304-313; https://doi.org/10.3390/s30800304

The Electrochemical Detremination of Nitric Oxide in Seawater Media with Microelectrodes

1
Institute of Marine Chemistry, Ocean University of China, Qingdao 266003, China
2
Department of Marine Science, the University of Georgia, Athens, GA 30602, USA
*
Authors to whom correspondence should be addressed.
Received: 15 April 2003 / Accepted: 2 May 2003 / Published: 22 August 2003
(This article belongs to the Special Issue Nitric Oxide Sensors and Their Applications in Biomedical Research)
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Abstract

The electrochemical determination of nitric oxide in seawater with microelectrodes is reported in this paper. Two electrodes, ISO-NOPMC microsensor and modified platinum microelectrode, are evaluated for their performance in seawater. The peak current is found to be linear with the NO concentration in the range 1×10-6-1.2×10-5 mol/l for both microelectrodes. The detection limit of ISO-NOPMC microsensor is 1.4×10-8 mol/l. Two methods for calibration of NO sensor, saturated NO solutions and decomposition of S-nitroso-acetyl-DL-penicillamine (SNAP), are discussed and compared. In addition, we examined the performance degradation of these microelectrodes in seawater due to complexation with seawater components. View Full-Text
Keywords: ISO-NOPMC microsensor; modified platinum microelectrode; Nitric oxide; Seawater; SNAP ISO-NOPMC microsensor; modified platinum microelectrode; Nitric oxide; Seawater; SNAP
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Zhang, Z.; Xing, L.; Jiang, L.; Wang, Y.; Ren, C.; Cai, W.-J. The Electrochemical Detremination of Nitric Oxide in Seawater Media with Microelectrodes. Sensors 2003, 3, 304-313.

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