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


Autoria(s): Trindade,Magno Aparecido Gonçalves; Rinaldo,Daniel; Vilegas,Wagner; Zanoni,Maria Valnice Boldrin
Data(s)

01/01/2010

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.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000100027

Idioma(s)

pt

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.33 n.1 2010

Palavras-Chave #solvent Blue 14 dye #solvent Red 24 dye #fuel analysis
Tipo

journal article