CJCU

Chem. J. Chinese Universities ›› 1990, Vol. 11 ›› Issue (5): 462.

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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

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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

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