Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10559927 | Talanta | 2005 | 5 Pages |
Abstract
This paper describes a procedure for the speciation of antimony by UV-vis spectroscopy using pyrogallol as complexing agent. A partial least squares (PLS) regression was performed to resolve highly overlapping spectrophotometric signals obtained from mixtures of Sb(III) and Sb(V). The relative error in absolute value was less than 5% when concentrations of several mixtures were calculated. The minimum concentration determined was 3.96 Ã 10â5 mol dmâ3 and 3.98 Ã 10â5 mol dmâ3 for Sb(V) and Sb(III), respectively. The analysis of the possible effect of the presence of foreign ions in the solution was performed and the procedure was successfully applied to the speciation of antimony in pharmaceutical preparations and aqueous samples.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
M. Jesús Gómez González, Olga DomÃnguez Renedo, M. Julia Arcos MartÃnez,