The adsorption properties of 1,2-dimethyl-3,5-diphenyl-pyrazolium cation (difenzoquat) on the mercury electrode in aqueous medium are given. Strong adsorption is detectable at concentrations below 10(-6) mol/l and in a wide potential range. The time dependence of the electrode impedance indicates the formation of a compact film controlled by nucleation/growth phenomena. Under specific conditions the film has a fractal character connected with the existence of a constant phase element. An adsorptive stripping method can be worked out for its sensitive determination.
|Autori:||Pospisil L.; Hanzlik J.; Fuoco R; Fanelli N.|
|Titolo:||Growth of compact layers at the interfase. V Adsorption properties of difenzoquat herbicide (1, 2 - dimethyl - 3, 5 - diphenyl pyrazolium.|
|Anno del prodotto:||1992|
|Appare nelle tipologie:||1.1 Articolo in rivista|