Abstract
The theoretically predicted behaviour of the limiting current and the maximum current was examined. Normal pulse polarograms of 2-(pyrrolidynomethyl)-7-nitroimidazo-[4,3- b]-2,3-dihydro-oxazole (PNIO) in Britton—Robinson buffer at different bulk concentrations were investigated. The influence of the pulse time t p, the drop lifetime t d and the initial potential E i on the limiting current I 1 and the maximum current I max was investigated. All these dependences are typical of strong reactant adsorption at appropriate choices of E i and the bulk concentration of PNIO. Many theoretically predicted effects of strong reactant adsorption were observed at appropriate choices of E i. Behaviour typical of weak adsorption was found at E i = 0.
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