印制电极-金(Ⅲ)-盐酸体系电分析化学的研究  

Electrochemical Behaviour of the System of Screen Printed Electrode, Au(Ⅲ) and Hydrochloric Acid

作　　者：汪立忠[1] 张玉涛[2] 

机构地区：[1]同济大学环境工程学院,上海200092 [2]东北大学化学系,沈阳110006

出　　处：《分析化学》1996年第3期285-287,共3页Chinese Journal of Analytical Chemistry

摘　　要：印制电极在盐酸介质中，正电位条件下对AuCl4-有强烈的化学吸附作用。文中提出了质子化的二醋酸纤维素与AuCl4-缔合的修饰机理。结合对Au3+预富集后伏安测定的实验程序，分析讨论了其吸附热力学平衡与阴极扫描伏安动力学行为，初步证明该体系是强吸附和接近完全不可逆的。Gold tetrachlorate is strongly adsorbed on the surface of the screen printed elec trode at a positive potential in hydrochloric acid. A modified mechanism with association be tween hydrocellulose diacetate and gold tetrachlorate was suggested. The behaviour of ad sorption thermodynamics and cathodic voltammetry was discussed for the procedure of pre concentration and subsequent detection. The electrode process investigated in this paper was proved to be strongly adsorptive and irreversible.

关 键 词：印制电极 金 伏安法 电极反应机理 

分 类 号：O614.123[理学—无机化学] O657.14[理学—化学]