Chemically modified electrode for the simultaneous determination of trace metals and speciation analysis

✍ Scribed by R. Agraz; M.T. Sevilla; L. Hernández

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 600 KB
• Volume: 273
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(93)80159-i

✦ Synopsis

A modtied carbon paste electrode was used for the sunultaneous determmatlon of Zn, Cd, Pb, Cu and Hg Trace metal preconcentration was effected by selectwe retention on Amberbte IRC 718 chelatmg resm as an electrode modlfier, wth subsequent measurement by dlfferentlal-pulse voltammehy Peak potent& for he reomdatlon of these metals occur at -105, -0 80, -0 48, -0 24 and 0 06 V, respectwely, allowmg determmatlons at the fig I-* level Several metal ratms were studled m order to determine the mfluence of each metal on the determmation of the others The Influence of other substances was also studled to determme the potential of the method for speclatlon analysis studies