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Square‐Wave Voltammetry Applied to the Analysis of the Dye Marker, Solvent Blue 14, in Kerosene and Fuel Alcohol
Author(s) -
Trindade Magno Aparecido Gonçalves,
Boldrin Zai Maria Valnice
Publication year - 2007
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.200703964
Subject(s) - dimethylformamide , voltammetry , solvent , detection limit , square wave , kerosene , prussian blue , electrochemistry , analytical chemistry (journal) , glassy carbon , chemistry , alcohol , cyclic voltammetry , chromatography , nuclear chemistry , electrode , organic chemistry , voltage , quantum mechanics , physics
The purpose of this paper is to develop an electroanalytical method based on square‐wave voltammetry (SWV) for the determination of the solvent blue 14 (SB‐14) in fuel samples. The electrochemical reduction of SB‐14 at glassy carbon electrode in a mixture of Britton‐Robinson buffer with N , N‐ dimethylformamide (1 : 1, v/v) presented a well‐defined peak at−0.40 V vs. Ag/AgCl. All parameters of the SWV technique were optimized and the electroanalytical method presented a linear response from 1.0×10 −6 to 6.0×10 −6 mol L −1 ( r =0.998) with a detection limit of 2.90×10 −7 mol L −1 . The developed method was successfully utilized in the quantification of the dye SB‐14 in kerosene and alcohol samples with average recovery from 93.00 to 98.10%.