Determination of the Phthalocyanine Textile Dye, Reactive Turquoise Blue, by Electrochemical Techniques

نویسندگان

  • Marly E. Osugi
  • Patrícia A. Carneiro
  • Maria Valnice B. Zanoni
چکیده

Azul turquesa 15 (AT15) é um corante reativo amplamente utilizado na indústria têxtil para colorir fibras naturais. A presença destes corantes no efluente e rejeito industrial é de considerável interesse devido a problemas ecotoxicológicos e ambientais. A redução eletroquímica deste corante foi investigada em solução aquosa usando voltametria cíclica, eletrólise em potencial controlado e voltametria de redissolução catódica. As melhores condições experimentais para descoloração de solução do corante por eletrólise em potencial controlado foram obtidas em meio alcalino. Usando voltametria de redissolução catódica, a curva analítica foi obtida em um intervalo de concentração de 5,00x10 mol L a 1,00x10 mol L de AT15 em pH 4,0, usando tempo de acúmulo de 180 e 240 s e potencial de acúmulo de 0,0 V. O método proposto foi aplicado na determinação direta do corante em água de torneira e efluente da indústria têxtil.

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تاریخ انتشار 2003