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Voltammetric behavior of pyrimethamine in veterinary formulations using square‐wave and adsorptive square‐wave techniques
Author(s) -
Berzas J. J.,
Rodríguez Juana,
Lemus J. M.,
Castañeda G.
Publication year - 1995
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140071211
Subject(s) - square wave , pyrimethamine , square (algebra) , derivative (finance) , chemistry , chromatography , aqueous solution , stripping (fiber) , analytical chemistry (journal) , relative standard deviation , detection limit , mathematics , materials science , physics , medicine , quantum mechanics , voltage , malaria , immunology , plasmodium falciparum , composite material , economics , financial economics , geometry
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 response of SQX and PMT the first derivative was used for the simultaneous determination of these two components. The relative standard deviations obtained for concentration levels of PMT as low as 3 × 10 −6 M (SW) and 5 × 10 −7 M (SWS) were 2.2% and 2.7% ( n = 10), respectively.