Simultaneous determination of textile dyes by Adsorptive Cathodic Stripping Voltammetry/Determinacao simultanea de corantes texteis por Voltametria Adsortiva de Redissolucao Catodica

The Adsorptive Cathodic Stripping Voltammetry (ACSV--differential pulse) proved to be an efficient method in the separation and quantification of two reactive textile dyes, Procion Yellow (PY) and Procion Red (PR), each containing two azo groups as chromophores and two monochlorotriazine reactive gr...

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Veröffentlicht in:Acta scientiarum. Technology 2013-04, Vol.35 (2), p.387
Hauptverfasser: Santos, Lidia Brizola, Domingues, Fernando Santos, Rosseto, Fernando, de Cinque Almeida, Vitor, Garcia, Juliana Carla, de Souza, Nilson Evelazio
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Sprache:spa
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Zusammenfassung:The Adsorptive Cathodic Stripping Voltammetry (ACSV--differential pulse) proved to be an efficient method in the separation and quantification of two reactive textile dyes, Procion Yellow (PY) and Procion Red (PR), each containing two azo groups as chromophores and two monochlorotriazine reactive groups, at nanomolar level. The linearity of the method obtained for each reactive dye was 30.15-633.15 nmol [L.sup.-1] for PY in B-R buffer pH 8.0, and 62.56-982.291 nmol [L.sup.-1] for PR in B-R buffer pH 8.0, using preconcentration at -0.1 V during 60 s. Keywords: stripping voltammetry, reactive dyes, textile dyes. A tecnica de voltametria adsortiva de redissolucao catodica (VARC--pulso diferencial) mostrou-se eficiente na separacao e quantificacao de dois corantes texteis reativos, Amarelo Procion (PY) e Vermelho Procion (PR), cada um contendo dois grupos azo como cromoforos e dois grupos reativos monocloro-triazina, a nivel nanomolar. A linearidade do metodo obtida para cada corante reativo foi 30,15-633,15 nmol [L.sup.-1] para AP em tampao B-R pH 8,0 e 62,56-982,291 nmol [L.sup.-1] para VP em tampao B-R pH 8,0, usando pre-concentracao em -0,100 V por 60 s. Palavras-chave: voltametria adsortiva, corantes reativos, corantes texteis.
ISSN:1806-2563
DOI:10.4025/actascitechnol.v35i2.16595