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BIBTEX RIS

Determinação de corantes marcadores do tipo azo e antraquinona em combustíveis por cromatografia líquida com detecção eletroquímica

2010; Brazilian Chemical Society; Volume: 33; Issue: 1 Linguagem: Inglês

10.1590/s0100-40422010000100027

ISSN

1678-7064

Autores

Magno Aparecido Gonçalves Trindade, Daniel Rinaldo, Wagner Vilegas, María Valnice Boldrin Zanoni,

Tópico(s)

Dye analysis and toxicity

Resumo

SAMPLE USING HPLC WITH ELECTROCHEMICAL DETECTION.An analytical method based on high-performance liquid chromatography with electrochemical detection has been developed and applied to the determination of Solvent blue 14 (SA-14) and Solvent red 24 (SV-24) in fuel samples.The dyes were better separated on C18 column, using a mobile phase composed of acetonitrile and ammonium acetate (90:10, v/v).Detection was carried out at an oxidation potential of +0.85V.The detector response was linear at concentration range of 7.50×10 -8 -1.50×10 -6 mol L -1 (r = 0.997) for SA-14 and SV-24, respectively.The method was used to quantify these dyes in fuels samples with satisfactory accuracy and precision.

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