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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Simultaneous voltammetric determination of synthetic colorants in food using a cathodically pretreated boron-doped diamond electrode

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Author(s):
Medeiros, Roberta A. [1] ; Lourencao, Bruna C. [1] ; Rocha-Filho, Romeu C. [1] ; Fatibello-Filho, Orlando [1]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Carlos, Dept Quim, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Talanta; v. 97, p. 291-297, AUG 15 2012.
Web of Science Citations: 70
Abstract

Differential pulse voltammetry (DPV) and a cathodically pretreated boron-doped diamond (BDD) electrode were used to simultaneously determine two pairs of synthetic food colorants commonly found mixed in food products: tartrazine (TT) and sunset yellow (SY) or brilliant blue (BB) and sunset yellow (SY). In the DPV measurements using the BDD electrode, the reduction peak potentials of TT and SY or BB and SY were separated by about 150 mV. The detection limit values obtained for the simultaneous determination of TT and SY or BB and SY were 62.7 nmol L-1 and 13.1 nmol L-1 or 143 nmol L-1 and 25.6 nmol L-1, respectively. The novel proposed voltammetric method was successfully applied in the simultaneous determination of these synthetic colorants in food products, with results similar to those obtained using a HPLC method at 95% confidence level. (C) 2012 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/00601-9 - Application of boron-doped diamond and amorphous carbon nitride electrodes for the simultaneous determination of drugs of different therapeutic groups in pharmaceutical formulations and urine samples
Grantee:Roberta Antigo Medeiros
Support Opportunities: Scholarships in Brazil - Post-Doctoral