Amperometric determination of nitric oxide at a carbon nanotube modified electrode with redox polymer coating
Amperometric determination of nitric oxide at a carbon nanotube modified electrode with redox polymer coating
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DOI：
10.1007/s10008-010-1119-4
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发表时间：
2011-03
影响因子：
2.5
通讯作者：
J. Fei;Shengshui Hu;K. Shiu
中科院分区：
文献类型：
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作者：
J. Fei;Shengshui Hu;K. Shiu
一种新型化学修饰电极，基于涂覆在单壁碳纳米管（SWNT）修饰的玻碳电极（GCE）上的含锇络合物的氧化还原聚合物薄膜，用于测定一氧化氮。结果表明，与裸 GCE 和 SWNT 修饰的 GCE 上观察到的氧化电流相比，SWNT/氧化还原聚合物涂覆的 GCE 的氧化电流显着增加。在+0.80 V（vs. Ag|AgCl）电位下进行电流测量，发现在2.0 × 10−7至4.0 × 10−5M范围内，NO的电流响应与其浓度成正比，检测限估计为5.0 × 10−8M。
A novel chemically modified electrode based on an osmium complex-containing redox polymer film coated on single-walled carbon nanotube (SWNT) modified glassy carbon electrode (GCE) has been described for the determination of nitric oxide. The results showed that the oxidation current increased significantly at the SWNT/redox polymer coated GCE, as compared to that observed on a bare GCE- and SWNT-modified GCE. Amperometric measurement was carried out at the potential of +0.80 V (vs. Ag|AgCl) and the current response to NO was found to be directly proportional to its concentration in the range from 2.0 × 10−7to 4.0 × 10−5M, and the detection limit was estimated to be 5.0 × 10−8M.