VOLTAMMETRIC BEHAVIOR OF PYRIMETHAMINE IN VETERINARY FORMULATIONS USING SQUARE-WAVE AND ADSORPTIVE SQUARE-WAVE TECHNIQUES

Authors
BERZAS JJ RODRIGUEZ J LEMUS JM CASTANEDA G
Citation
Jj. Berzas et al., VOLTAMMETRIC BEHAVIOR OF PYRIMETHAMINE IN VETERINARY FORMULATIONS USING SQUARE-WAVE AND ADSORPTIVE SQUARE-WAVE TECHNIQUES, Electroanalysis, 7(12), 1995, pp. 1156-1160
Citations number
16
Categorie Soggetti
Chemistry Analytical
Journal title
Electroanalysis → ACNP
ISSN journal
10400397
Volume
7
Issue
12
Year of publication
1995
Pages
1156 - 1160
Database
ISI
SICI code
1040-0397(1995)7:12<1156:VBOPIV>2.0.ZU;2-O
Abstract
The voltammetric behavior of pyrimethamine (PMT) was studied by square -wave (SW) and square-wave stripping (SWS) techniques, leading to two methods for its determination [in presence of sulfaquinoxaline (SQX)] in aqueous samples and veterinary formulations. Due to overlapping res ponse of SQX and PMT the first derivative was used for the simultaneou s determination of these two components. The relative standard deviati ons obtained for concentration levels of PMT as low as 3 x 10(-6) M (S W) and 5 x 10(-7) M (SWS) were 2.2% and 2.7% (n = 10), respectively.