Voltammetric behavior of sulfadimetoxol using square‐wave and adsorptive stripping square‐wave techniques

Abstract

Abstract The voltammetric behavior of sulfadimetoxol (SDX) was studied by square‐wave techniques, leading to two methods for its determination in aqueous samples and veterinary formulations. The application of the square‐wave mode shows the determination of SDX between 1 × 10 −7 M and 2 × 10 −6 M at −0.60 V and for the stripping voltammetry of adsorbed SDX with an accumulation step of 15 s proved to be more sensitive, yielding signals five times larger than those obtained without the accumulation. The determination of SDX was done between 2 × 10 −8 M and 5 × 10 −7 M by stripping mode. The relative standard deviations obtained for concentration levels of SDX as low as 3 × 10 −7 M with square‐wave was 3.4 % ( n = 8) and for 2 × 10 −7 M with stripping square‐wave was 3.1 % ( n = 8). The methods were satisfactorily applied for determining SDX in four veterinary products.