高等学校化学学报

高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (10): 1618.

• 研究简报 • 上一篇    下一篇

分子筛修饰电极的研究(Ⅱ)──NaY-聚乙烯醇电极对铅离子的响应

邹明珠1, 鲁洁1, 茹钦华2   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 东北师范大学化学系, 长春 130024
  • 收稿日期:1996-08-22 出版日期:1997-10-24 发布日期:1997-10-24
  • 通讯作者: 邹明珠, 女, 57岁, 教授.
  • 作者简介:邹明珠, 女, 57岁, 教授.
  • 基金资助:

    中国科学院长春应用化学研究所电分析化学开放实验室基金

Studies on Zeolite Modified Electrode (Ⅱ)──Stripping Voltammograms of Ph2+ on Zeolite-Polyvinyl Electrode

ZOU Ming-Zhu1, LU Jie1, RU Qin-Hua2   

  1. 1. Department of Chemistry, Jilin University, Changchun 130023;
    2. Department of Chemistry, NOrth-East Normal University, Changchun 130024
  • Received:1996-08-22 Online:1997-10-24 Published:1997-10-24

PDF (PC)

被引次数

8

关键词: 分子筛, 聚乙烯醇, 铅离子, 修饰电极

Abstract: Anew zeolite modified electrode was prepared by using zeolite/polyvinyl as amodifier on GCE. The anodic stripping voltammograms of Pb2+ on ZPEis caused by zeoliteselective adsorption to Pb. The linear range of Pb2+ in 0.5 mol/L KCl(pH=2.0) solution is1. 0 × 10-6～1. 0 × 10-3 mol/Lwith 0. 999 correlation coefficient (n=6). The relativestandard deviation of the response to 4. 0 × 10-6 mol/L Pb2+ on ZPEwhich has been repeatedlyproduced for ten times is 2. 5 %. The detection limit is 3. 0× 10-7 mol/L Pb2+. To the 1. 0×10-6 mol/L Ph2+, 1000 times Al3+, Na+, K+, Cl-, SO, NO3-, Hg2+, 100 times Ni2+,Co2+, Cu2+, Zn2+, Cd2+, Mn2+ and 10 times Ca2+, Fe3+, Mo6+, Cr3+ do not disturb theanalysis. The ZPEshows a high selectivity, sensitivity and a desired reproducibility. Itssensitivity dropped to 90% of the original value after it had been continuously used for thousandtimes.

Key words: Zeolite, Polyvinyl, Lead ion, Modified electrode

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