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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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.