高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (9): 1192.

• 论文 • 上一篇    下一篇

电化学法制备薄膜修饰电极及其铅的阳极溶出测定

庄秀润, 徐金瑞   

  1. 华侨大学应用化学系, 泉州, 362011
  • 收稿日期:1991-01-28 修回日期:1992-04-13 出版日期:1992-09-24 发布日期:1992-09-24
  • 通讯作者: 庄秀润

Preparation of Film Modified Electrode by Electrochemical Method and Its Application for Anodic Stripping Voltammetric Determination of Pb(Ⅱ)

ZHUANG Xiu-Run, XU Jin-Rui   

  1. Department of Applied Chemistry, Huaqiao University, Quanzhou, 362011
  • Received:1991-01-28 Revised:1992-04-13 Online:1992-09-24 Published:1992-09-24

摘要: 本文提出在邻氨基酚-甲醛-NaOH电解液中,用电化学方法处理玻碳电极,使电极对铅的测定灵敏度比未处理的玻碳电极提高60倍以上.电板的重复性好,相对标准偏差为3.7%(n=10)。铅的浓度在10ng/mL以下与其溶出峰高呈良好的线性关系,定量下限为0.2ng/mL.

关键词: 铅, 玻碳电极, 阳极溶出伏安法, 邻氨基酚

Abstract: In this paper we described the glassy carbon electrode treated by an electrochemical method in an aqueous solution containing the o-aminophenol,formaldehyde and sodium hydroxide.The sensitivity of the treated electrode for Pb2+ is about 60 times higher than that of untreated glassy carbon electrode.The electrode has a good reproducibility with a relative standard deviation of 3.7%(n=10).The anodic stripping peak height depends linearly on the Pb2+ concentration up to 10 ng/mL,and the quantitative limit with this electrode is 0.2 ng/mL.

Key words: Lead, Glassy-carbon electrode, Anodic stripping voltammetry, o-Aminophenol

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