Determinação de corantes marcadores do tipo azo e antraquinona em combustíveis por cromatografia líquida com detecção eletroquímica
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Data
2010-01-01
Autores
Trindade, Magno Aparecido Gonçalves [UNESP]
Rinaldo, Daniel [UNESP]
Vilegas, Wagner [UNESP]
Zanoni, Maria Valnice Boldrin [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Química
Resumo
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.
Descrição
Palavras-chave
solvent Blue 14 dye, solvent Red 24 dye, fuel analysis
Como citar
Química Nova. Sociedade Brasileira de Química, v. 33, n. 1, p. 146-150, 2010.