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Sensitive Determination of Water Insoluble Dyes Used as Marking of Commercial Petroleum Products Using High‐Performance Liquid Chromatography with Electrochemical Detection
Author(s) -
Trindade Magno Aparecido Gonçalves,
Zai Maria Valnice Boldrin,
Matysik FrankMichael
Publication year - 2010
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200900500
Subject(s) - chromatography , acetonitrile , elution , solvent , ammonium acetate , chemistry , high performance liquid chromatography , gasoline , electrochemistry , electrode , organic chemistry
This paper describes an analytical method using high‐performance liquid chromatographic (HPLC) separation coupled with electrochemical detection to detect three dyes, Solvent Blue 14 (SB‐14), Solvent Blue 35 (SB‐35) and Solvent Red 24 (SR‐24). The dyes were eluted and separated using a reversed‐phase column (C‐8) under isocratic elution with the mobile phase containing a mixture of acetonitrile/ammonium acetate (5.0 mmol L −1 ) at the ratio of 75 : 25 (v/v). Two sample pretreatment methods were tested and successfully applied to quantify SB14, SB‐35 and SR‐24 dyes in gasoline samples. The proposed method was simple, fast and suitable to detect and quantify marker dyes in gasoline sample at low concentration.