CHROMIUM(VI) DETERMINATION AT A ROTATING-DISC ELECTRODE

Authors
SMART NG HITCHMAN ML ANSELL RO FORTUNE JD
Citation
Ng. Smart et al., CHROMIUM(VI) DETERMINATION AT A ROTATING-DISC ELECTRODE, Analytica chimica acta, 292(1-2), 1994, pp. 77-80
Citations number
17
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
292
Issue
1-2
Year of publication
1994
Pages
77 - 80
Database
ISI
SICI code
0003-2670(1994)292:1-2<77:CDAARE>2.0.ZU;2-C
Abstract
Results are given for a method of determination of Cr(VI) by amperomet ry at a solid electrode. By using a fluoride containing electrolyte at a controlled pH and an amalgamated gold electrode, previously reporte d problems of electrode passivation by Cr(III) have been overcome. The method gives reproducible results and can be used for monitoring Cr(V I) with a detection limit of 0.9 x 10(-9) mol cm(-3) at the 95% confid ence level.