Cloud Point Extraction Spectrophotometric Determination of Trace Quantities of Bismuth in Urine

نویسندگان

  • Abbas Afkhami
  • Tayyebeh Madrakian
  • Hajar Siampour
چکیده

Investigamos o processo de extração no ponto-nuvem para bismuto, a partir de soluções aquosas, usando o surfactante não-iônico Triton X-114. O método consiste na reação de complexação do Bi(III) com vermelho de bromopirogalol e extração mediada pelo sistema micelar. As condições ótimas de extração e reação (pH, concentração de reagentes, efeito do tempo de incubação etc.) foram estudadas, e as características analíticas do método (por exemplo, limite de detecção, intervalo de linearidade) foram estabelecidas. Uma resposta linear para o íon Bi(III) foi obtida no intervalo de 4,60-120,0 ng mL. O limite de detecção obtido foi de 2,0 ng mL. O efeito da interferência de alguns ânions e cátions foi também testado. O método foi aplicado para a determinação de bismuto em amostras de urina humana.

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تاریخ انتشار 2006