Tensammetric Study of the Adsorption of Brucine

Abstract

This paper will present two results of experiments concerning the adsorption of brucine. We will first discuss the adsorption of brucine on D. M. E. studied tensammetrically. Brucine was found to give a tensammetric wave with two peaks, at +0.10 V and −1.15 V vs. SCE. The positive tensammetric peak can be ascribed to the usual adsorption process. The second peak, however, behaved differently from the first, probably due to the reformation of adsorbed brucine film involving the protonation and the reorientation of brucine. Secondly, we will present experimental facts concerning the depressive effects of brucine on the reduction waves of copper(II).

Application of a Mercury-Coated Platinum Electrode to the A.C. Stripping Analysis of a Trace Amount of Metal Ions

“…7,8) The standard solution of mercuric nitrate was prepared by dissolving a known amount of metallic mercury in dilute nitric acid (1+1) and by then removing the excess nitric acid by distillation under reduced pressure. All the other chemicals were of an analytical reagent grade and were used without further purification.…”