Characterization of Poly(Safranine T)-Modified Electrode and Application for Simultaneous Determination of Epinephrine and Uric Acid Coexisting with Ascorbic Acid

نویسندگان

  • Lingmei Niu
  • Kaoqi Lian
  • Weijun Kang
  • Shan Li
چکیده

Um eletrodo de carbono vítreo modificado com poli(safranina T) foi utilizado para a determinação simultânea de epinefrina (EP) e ácido úrico (AU) na presença de ácido ascórbico (AA). Correntes eletrocatalíticas aumentadas e potenciais bem separados para EP e AU foram observados. As correntes de pico anódico de EP e AU foram lineares em função das concentrações correspondentes, na faixa de 6,0×10-1,0×10 mol L. Além disso, o eletrodo modificado mostrou boa sensitividade e estabilidade. Resultados satisfatórios foram alcançados para a determinação de EP e AU em soluções de injeção de EP bem como em amostras de urina humana.

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تاریخ انتشار 2011