Analysis of chromium and copper by cathodic stripping voltammetry with mixed ligands |
| |
Authors: | Marc?Le Lann Email author" target="_blank">Catherine?ElleouetEmail author Fran?ois?Quentel Christian?Louis?Madec |
| |
Institution: | (1) UMR 6521, Université de Bretagne Occidentale, Laboratoire de Chimie Analytique, 6 Avenue Victor Le Gorgeu, BP 809, 29285, Brest Cedex, France, |
| |
Abstract: | Cathodic adsorptive stripping voltammetry is one of the most sensitive analytical methods for ultratrace analysis. The detection
limit is usually lower than 10−9 mol/L. Most adsorptive stripping procedures have been focused on the one ligand/one analyte approach. In order to reduce
analysis time and sample volume, the possibility of simultaneously determining several metals by cathodic stripping voltammetry
using a mixture of ligands was explored, e.g., by Colombo and van den Berg (1997). Here, we describe a new procedure for quantifying
chromium and copper using 2,2′-bipyridine and 8-hydroxyquinoline (oxine). The effect of various operational parameters such
as buffer type, ligand concentration, potential and time collection were assessed and optimized. Possible interferences by
trace metals and organic matter were also investigated. Applicability for fresh water is illustrated.
Electronic Publication |
| |
Keywords: | Chromium Copper Mixed ligands Adsorptive stripping voltammetry |
本文献已被 SpringerLink 等数据库收录! |
|