高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (5): 813.

• 研究论文 • 上一篇    下一篇

非均匀电场的电堆积理论研究

杨丽, 何友昭, 淦五二, 林祥钦, 赵要强   

  1. 中国科学技术大学化学系, 合肥 230026
  • 收稿日期:2001-02-27 出版日期:2002-05-24 发布日期:2002-05-24
  • 通讯作者: 何友昭(1946出生),男,教授,从事流动注射和毛细管电泳分析研究.E-mail:yzhe@ustc.edu.cn E-mail:yzhe@ustc.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29975026)资助.

Non-uniform Field Theory in Electrostacking

YANG Li, HE You-Zhao, CAN Wu-Er, LIN Xiang-Qin, ZHAO Yao-Qiang   

  1. Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
  • Received:2001-02-27 Online:2002-05-24 Published:2002-05-24

摘要: 基于样品区非均匀电场电势分布的测试结果并利用异性双点电荷电场的理论模型,研究了非均匀电场电堆积效应,提出了非均匀电场电堆积作用的理论模型.采用一种改进的非均匀电场电堆积系统,以矿泉水中痕量Cr(Ⅵ)和Pb(Ⅱ)为考察对象,同时对其进行分离富集和测定,为理论模型提供了实验依据.

关键词: 非均匀电场, 电堆积, 预富集

Abstract: According to the electric poential distribution of a non-uniform field in a sample solution, a the-oretical model of the non-uniform electric field, namely, a pair Of equal and opposite charges separatedfrom each other in a distance, was used to investigate the non-uniform field electrostacking.The effect ofthe non-uniform field on electrostacking was presented in this paper.In order to validate the theoreticalmodel, anionic chromium(Ⅵ ) and cationic lead (Ⅱ ) in mineral water were pre-concentrated with an im-proved non-uniform field electrostacking system simultaneously.And the experimental results were coinci-dent with the theoretical prediction.

Key words: Non-uniform electric field, Electrostacking, Pre-concentration

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