𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Square-wave cathodic stripping voltammetry of hydrolyzed uranyl species

✍ Scribed by Renata Djogić; Marko Branica

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
534 KB
Volume
305
Category
Article
ISSN
0003-2670

No coin nor oath required. For personal study only.

✦ Synopsis

Adsorption of uranyl-hydroxo species has been studied using square-wave cathodic stripping voltammetry (SWCSV). The peak of the many1 ion between pH 5 and 8 has the characteristic features of a reduction complicated with reactant adsorption. The reduction process is totally irreversible, with an average transfer coefficient cy = 0.47. The adsorbed species was found to be most probably UO,(OH)t, after correlation of the experimental results with the calculated ionic distribution in the solution. The experimental conditions for the lowest detection limit are given and it amounts to 2 X 1O-8 mol 1-l of uranyl hydroxo species. The maximum surface concentration is determined, to be r= (2.6 + 0.1) X 10-l" mol cm-*.

📜 SIMILAR VOLUMES

Determination of dimethoate in water by
Determination of dimethoate in water by cathodic stripping square-wave voltammetry
✍ P. Hernández; Y. Ballesteros; F. Galán; L. Hernández 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 308 KB 👁 1 views

This article describes the direct determination of the pesticide dimethoate in river water in an alkaline medium through cathodic stripping voltammetry. By employing an alkaline media and accumulation potential of 30 mV, reduction peak appears at -0.7 V. The detection limit is 1 ng m1-I.