高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (10): 1790.

• 研究简报 • 上一篇    下一篇

电化学双石英晶体阻抗分析新方法

谢青季, 张友玉, 杨晓辉, 李萌, 何红梅, 姚守拙   

  1. 湖南师范大学化学研究所, 长沙 410081
  • 收稿日期:2002-04-10 出版日期:2003-10-24 发布日期:2003-10-24
  • 通讯作者: 谢青季(1966年出生),男,博士,教授,主要从事电分析化学与电化学研究.E-mail:xieqj@cs.hn.cn E-mail:xieqj@cs.hn.cn
  • 基金资助:

    国家自然科学基金(批准号:20275010);全国高等学校优秀青年教师教学科研奖励计划(教人司[2000]26号)资助

A Novel Method for Electrochemical Dual Quartz Crystal Impedance Analysis

XIE Qing-Ji, ZHANG You-Yu, YANG Xiao-Hui, LI Meng, HE Hong-Mei, YAO Shou-Zhuo   

  1. Chemical Research Institute, Hunan NormaLUniversity, Changsha 410081, China
  • Received:2002-04-10 Online:2003-10-24 Published:2003-10-24

关键词: 双石英晶体, 电声阻抗分析, 电化学

Abstract: Anovel method for simultaneous impedance analyses of two resonating piezoelectric quartz crystals is proposed via the admittance measurements of two crystals in parallel and then nonlinear admittance fitting to an equivalent circuit of two Butterworth-Van Dyke circuits in parallel.Series of sucrose aqueous solutions and copper electro-deposition/stripping in a NH3-(NH4)2SO4buffer were used to test this method, giving that the impedance parameters of each of the parallel crystals reflecting the solution density-viscosity effect or the mass effect were very close to those measured with each single crystal alone.Also, simultaneous impedance measurements at the working and counter electrodes were carried out and discussed.

Key words: Dual quartz crystals, Electroacoustic impedance analysis, Electrochemistry

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