Abstract
The oxidative electrochemistry of nitrite was investigated using a glassy carbon electrode modified with surfactants such as didodecyldimethylammonium bromide (DDAB), Tween-80, and sodium dodecylbenzenesulfonate, respectively. Nitrite oxidation proceeds best in the presence of DDAB. The electrode exhibited good sensitivity and fast response, with a linear dynamic range between 1.0 and 80 μM of nitrite, and a sensitivity of 0.04 µA·µM−1. The electrode was successfully applied to the determination of nitrite in spiked real water samples.
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