Individual and Simultaneous Square Wave Voltammetric Determination of the Anticancer Drugs Emodin and Irinotecan at Renewable Pencil Graphite Electrodes
نویسندگان
چکیده
Um método versátil e com rápida sensibilidade para a determinação individual e simultânea das drogas anticancerígenas emodina (Em) e irinotecano (Irino) em fluidos biológicos baseados na voltametria de onda quadrada (SWV) utilizando um eletrodo de grafite de lápis renovável (PGE), foi investigado. A acumulação adsortiva controlada de Em e Irino na superfície PGE foi explorada para a determinação de traços de drogas anticancerígenas em fluidos biológicos. Sob as condições experimentais otimizadas como o pH do eletrólito suporte, potencial e tempo de acumulação e parâmetros eletroquímicos, curvas de calibração para análise de traços de Em e Irino individualmente e simultaneamente, mostraram uma excelente resposta linear. Os limites de detecção 5,17 × 10-10 e 1,68 × 10-9 mol L-1 de Em e Irino foram obtidos usando SWV em um PGE, respectivamente. Os resultados obtidos mostraram boa estabilidade, reprodutibilidade, repetibilidade e alta recuperação para a determinação de traços das duas drogas em fluidos biológicos. A análise estatística e os dados da curva de calibração para determinação de traços de Em e Irino individualmente, bem como, simultaneamente, são relatados.
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