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Citation: Zhao Kai-Yuan, Wang Yu-Qing. Performance of the Combined Electrode with Micro Holes Needling through the Insulating Film of Carbon Rod[J]. Acta Physico-Chimica Sinica, ;2002, 18(02): 183-187. doi: 10.3866/PKU.WHXB20020219 shu

Performance of the Combined Electrode with Micro Holes Needling through the Insulating Film of Carbon Rod

1.
Department of Chemistry, College of Sience and Technology of Suzhou, Suzhou 215009

Received Date: 17 July 2001
Available Online: 15 February 2002

A microelectrode is combined with micro holes formed by needling through the insulating film of carbon rod. （see Fig.1). The cyclic voltammogram(see Fig.2) of this electrode determined in solution of K3Fe(CN)6/K4Fe(CN)6 are fully identical with the theoretical curves. The limiting diffusion current determined from step scanning volt-ammetry method is in od linear relation with the concentration of K4Fe(CN)6 solution(see Fig.5) and with the square of scanning rate. 　　The cyclic voltammetric curve of Cd2＋ in solution with base electrolyte KCl is an irreversible process(see Fig.3). The current of reduce peak (at －0.98 V vs SCE), determined from step scanning voltammetric method at 800 mV•s－1 scanning rate, is in od linear relation with the concentration of Cd2＋ at 2.55×10－5 mol•dm－3 to 1.28×10－4 mol•dm－3.
- Combinaed micro plate electrode;Cyclic voltamogram;Step scanning voltammetric method;Micro hole;Cadmium
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