Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9743344 | Analytica Chimica Acta | 2005 | 7 Pages |
Abstract
A bare graphite microelectrode was used for the anodic stripping voltammetry determination of traces and ultratraces of Tl+ ion in aqueous solutions at pH 3.5, in the presence of a 1 Ã 10â3 mol Lâ1 EDTA solution. The proposed method, validated and tested at ultratrace level in environmental water samples, showed low detection and quantification limits (0.01 and 0.03 μg Lâ1, respectively) and excellent capability to determine the analyte also in the presence of a very high excess of interfering ions, i.e. 2200:1 and 10,000:1 (w:w) for Pb2+ and Cd2+, respectively. Furthermore, the wide linearity range, the absence of bias, the low time required for each measurement and the low cost of the instrumentation needed are additional factors supporting the application of such a method as a screening tool in the direct determination of thallium ionic species in environmental samples.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Nadia Spano, Angelo Panzanelli, Paola Costantina Piu, Maria Itria Pilo, Gavino Sanna, Renato Seeber, Andrea Tapparo,