Me-BTABr Reagent in Cloud Point Extraction for Spectrometric Determination of Copper in Water Samples
نویسندگان
چکیده
Neste trabalho, é proposto um novo método para a determinação de cobre, utilizando extração em ponto-nuvem. O reagente 2-[2 ́-(6-metil-benzotiazolilazo)]-4-bromofenol (Me-BTABr) foi usado como agente complexante e Triton X-114 foi adicionado como surfactante. Após a separação das fases, foi promovida a diluição da fase rica em surfactante com metanol acidificado, e o teor de cobre medido por Espectrometria de Absorção Atômica com chama. O procedimento proposto viabilizou a determinação de cobre com um limite de detecção de 1,08 μg L. O procedimento foi validado por meio da análise de material de referência certificado. O método foi aplicado com sucesso à determinação de cobre, em amostras de água de rio e poço.
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