Document Detail

Simultaneous voltammetric determination of synthetic colorants in food using a cathodically pretreated boron-doped diamond electrode.
MedLine Citation:
PMID:  22841082     Owner:  NLM     Status:  In-Data-Review    
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 150mV. The detection limit values obtained for the simultaneous determination of TT and SY or BB and SY were 62.7nmolL(-1) and 13.1nmolL(-1) or 143nmolL(-1) and 25.6nmolL(-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.
Roberta A Medeiros; Bruna C Lourencao; Romeu C Rocha-Filho; Orlando Fatibello-Filho
Publication Detail:
Type:  Journal Article     Date:  2012-04-26
Journal Detail:
Title:  Talanta     Volume:  97     ISSN:  1873-3573     ISO Abbreviation:  Talanta     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-07-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  291-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Departamento de Química, Universidade Federal de São Carlos, C.P. 676, São Carlos - SP 13560-970, Brazil.
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