VOLTAMMETRIC DETERMINATION OF CR(III) AND CR(VI) IN TROPICAL ESTUARINE WATERS - ADVANTAGES AND LIMITATIONS

Authors
DESOUZA EM WAGENER ADLR FARIAS P
Citation
Em. Desouza et al., VOLTAMMETRIC DETERMINATION OF CR(III) AND CR(VI) IN TROPICAL ESTUARINE WATERS - ADVANTAGES AND LIMITATIONS, Croatica chemica acta, 70(1), 1997, pp. 259-269
Citations number
42
Categorie Soggetti
Chemistry
Journal title
Croatica chemica acta → ACNP
ISSN journal
00111643
Volume
70
Issue
1
Year of publication
1997
Pages
259 - 269
Database
ISI
SICI code
0011-1643(1997)70:1<259:VDOCAC>2.0.ZU;2-E
Abstract
The adsorptive-catalytic voltammetry of Cr(VI) and total chromium usin g DTPA is optimized for application to estuarine waters with high cont ent of dissolved organic substances. The sensitivity of the method, be tter than 2 nA nM(-1) s(-1), is adequate to the intended goal of speci ation. However, the instability of Cr(VI) in the presence of organic m aterial imposes restrictions to the use of this methodology in large s cale surveys and monitoring activities.