去甲肾上腺素的光谱电化学研究

Study on Norepinephrine by Spectroelectrochemistry

本文用平行入射式光谱电化学方法，测定了去甲肾上腺素（NE）的热力学常数E°’和n值，用Zn2+作为自由基稳定剂，讨论了其通过一个电子传递产生半醌自由基中间体的电极反应机理，并结合其它电化学方法，证明了NE在电极上以传质扩散为主的准可逆过程。

The thermodynamic constants of norepinephrine (NE),E°' =0. 25 V, n≈1, were determined by parallel incidence spectroelectrochemistry. The intermediate of o-semiquinone radical was found with Zn2+as stabilizer and the formation mechanism was discussed. By other electroanalytical methods (cyclic voltammetry and semidifferential anodic stripping voltammetry), the oxidation of NE on the Pt electrode was proved to be a one electron exchange quasireversible process,which is controlled by diffusion.