Adsorptive Stripping Voltammetric Determination of Oxolinic Acid in Water Sample

Abstract

One new methodology for analysis of the antimicrobial oxolinic acid (OXA) based on adsorptive stripping voltammetry (AdSV) in carbon paste electrode (CPE) was developed and applied in untreated pond water sample. Cyclic voltammetry (CV) indicated that an irreversible anodic process occurs in KOH solution as supporting electrolyte. Quantification of the antimicrobial was carried out by differential pulse adsorptive stripping voltammetry (DPAdSV) at potential of deposition (E D ) +1.05 V for 45 s to examine OXA adsorption on the surface of CPE. The limits of detection (LOD) and quantification (LOQ) of the method for OXA analysis were determined. The values of LOD were 0.0570 and 0.512 mg L -1 in absence of matrix and in the water sample, respectively, and the corresponding values of LOQ were 0.192 and 1.707 mg L -1 , respectively. The apparent recovery percentage for different concentrations of OXA in natural waters ranged between 98.4 and 109%.

A descrição matemática da detecção eletroquímica da ergina, assistida pelos novos derivados triazólicos, dopados pelo íon amavadina

“…Outrossim, o seu uso pelos desportistas é banido por regulamento da federação desportiva correspondente e por lei (quando aplicável). Destarte, a elaboração de um método da detecção da ergina é, sem dúvida, atual [5][6][7][8], e o uso dos métodos eletroanalíticos poderia dar bom serviço [9,10].…”