✦ LIBER ✦

Electrochemical behavior of vanadium in EDTA

✍ Scribed by Magda A. M. Ameer

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 158 KB
Volume: 34
Category: Article
ISSN: 0933-5137
DOI: 10.1002/mawe.200390115

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✦ Synopsis

Abstract

The use of chelating agents as cleaning chemicals to remove metal deposits is gaining interest. In this study the Electrochemical behavior of vanadium in EDTA, EA and EAC solutions was studied using AC impedance technique at different immersion time. The results indicate that the values of R~ct~ for EA solution are higher than that for EDTA and EAC. This may be due to the presence of ascorbic acid as reducing agent. The presence of surface film is confirmed by capacitance measurements. It is shown that the capacitance is time‐dependent. Generally, the capacitance decreases with immersion time and this can be discussed on the basis that the concentration of vanadium ions at the interface increases with immersion time.

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