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Scientific article
English

Adsorption of poly(ethylene glycol)s on mercury/aqueous solution interface : 1. Kinetics of PEG 8000 adsorption

Publication date1994
Abstract

In order to study the influence of the adsorption of fulvic compounds on voltammetric signals and to understand better the adsorption of these compounds on hydrophobic natural water interfaces, adsorption studies of macromolecules such as poly(ethylene glycol) (HO(CH2CH2O)n) with molecular weight of 8000 were done on the mercury/water interface by a.c. voltammetry at the potential of zero charge. The maximum surface concentration, adsorption equilibrium constant and adsorption rate constant have been determined from the global adsorption mechanism, controlled by two determining steps: diffusion and kinetics of adsorption at the interface.

Keywords
  • A.c. voltammetry
  • Adsorption
  • Hg electrode
  • Macromolecules
  • Poly(ethylene glycol)
Citation (ISO format)
MOTA, A.M. et al. Adsorption of poly(ethylene glycol)s on mercury/aqueous solution interface : 1. Kinetics of PEG 8000 adsorption. In: Colloids and surfaces. A, Physicochemical and engineering aspects, 1994, vol. 90, n° 2-3, p. 271–278. doi: 10.1016/0927-7757(94)02927-X
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Article (Published version)
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ISSN of the journal0927-7757
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