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The Electrochemical Detremination of Nitric Oxide in Seawater Media with Microelectrodes
Institute of Marine Chemistry, Ocean University of China, Qingdao 266003, China
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
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.
Keywords: ISO-NOPMC microsensor; modified platinum microelectrode; Nitric oxide; Seawater; SNAP
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Cite This Article
MDPI and ACS Style
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.
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(8):304-313.
Zhang, Zhengbin; Xing, Lei; Jiang, Liqing; Wang, Yongchen; Ren, Chunyan; Cai, Wei-Jun. 2003. "The Electrochemical Detremination of Nitric Oxide in Seawater Media with Microelectrodes." Sensors 3, no. 8: 304-313.