Otro
Determinação de corantes marcadores do tipo azo e antraquinona em combustíveis por cromatografia líquida com detecção eletroquímica
Registro en:
Química Nova. Sociedade Brasileira de Química, v. 33, n. 1, p. 146-150, 2010.
0100-4042
10.1590/S0100-40422010000100027
S0100-40422010000100027
WOS:000274726800027
S0100-40422010000100027.pdf
0000-0002-2296-1393
Autor
Trindade, Magno Aparecido Gonçalves
Rinaldo, Daniel
Vilegas, Wagner
Zanoni, Maria Valnice Boldrin
Resumen
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. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)