高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (5): 462-466.

• 研究论文 • 上一篇    下一篇

钼(Ⅵ)-苦杏仁酸体系的吸附伏安行为

许宏鼎1, 刘再新1, 张占恩2, 张丽君2   

  1. 1. 吉林大学化学系;
    2. 苏州城建环保学院环保系
  • 收稿日期:1988-09-13 出版日期:1990-05-24 发布日期:1990-05-24
  • 通讯作者: 许宏鼎
  • 基金资助:

    国家自然科学基金

Studies on Adsorptive Voltammetry Behaviour of Molybdenum ( Ⅵ )-Mandelic Acid System

Xu Hongding1, Liu Zaixin1, Zhang Zhan'en2, Zhang Lijun2   

  1. 1. Department of Chemistry, Jilin University, Changchun;
    2. Department of Environment Protection, College of Urban Building and Environment Protection, Suzhou
  • Received:1988-09-13 Online:1990-05-24 Published:1990-05-24

摘要: 本文对Mo(Ⅵ)-苦杏仁酸体系的吸附伏安行为做了系统的研究。测定了吸附量与络合物的形成常数,在此基础上建立了钼的吸附溶出伏安法。

关键词: 钼的测定, 钼酸的吸附伏安行为, 钼(Ⅵ)-苦杏仁酸络合物

Abstract: In this paper, a study of the adsorption voltammetry behaviour of Mo(Ⅵ)-mandelic acid (HL) is made systematically. The complex H2MoO4L22- can be adsorbed on the HMDE. The conditional constant of complex formation, 5. 7×109, maximum amount of adsorption, 8×10-7 mol/m2, and coefficient of adsorption, 1. 7 × 104 m3/mol, were determined in the medium of 2. 5 × 10-3 mol/L H2SO4. A procedure for determining Mo by utilizing the adsorptive stripping current of the ad-sorptable complex is developed. The limit of detection is 5× 10-10 mol/L Mo and the linear relationship between the current and concentration of Mo(Ⅵ) is in the range 1× 10-9 ~8× 10-8 mol/L.

Key words: Determination of Molybdenum, Adsorptive voltammetry behaviour of molybdic acid, Complex of Mo ( Ⅵ )-Mandelic acid