Document Detail

Flow injection simultaneous determination of synthetic colorants in food using multiple pulse amperometric detection with a boron-doped diamond electrode.
MedLine Citation:
PMID:  22967638     Owner:  NLM     Status:  In-Data-Review    
A single-line flow injection system and multiple pulse amperometric detection using a boron-doped diamond electrode were employed to develop and optimize a simple, low-cost, and rapid method for the simultaneous determination of two pairs of food colorants: tartrazine and sunset yellow (TT-SY) or brilliant blue and SY (BB-SY). A dual-potential waveform was used: E(det.1)=-150mV (400ms duration) and E(det.2)=-450mV (100ms duration) vs. Ag/AgCl (3.0molL(-1) KCl). Polarization at E(det.1) or E(det.2) causes reduction of SY or the respective pair of colorants, TT-SY or BB-SY; hence, with proper current correction, both colorants in each pair can be determined. The obtained linear response ranges (detection limits) were 5.0-60.0 (2.5) and 1.0-50.0 (0.80)μmolL(-1), for TT and SY, or 5.0-60.0 (3.5) and 1.0-50.0 (0.85)μmolL(-1), for BB and SY, respectively. Investigation of possible interferents (other food colorants or additives) showed no significant interference with the methods here proposed, which were then used to simultaneously determine the pairs of colorants in industrialized food samples, with results that showed good agreement with those obtained using a comparative HPLC method.
Roberta A Medeiros; Bruna C Lourencao; Romeu C Rocha-Filho; Orlando Fatibello-Filho
Related Documents :
15809108 - A novel modelling approach for spatial and temporal variations in nitrate concentration...
15381768 - Riparian deforestation, stream narrowing, and loss of stream ecosystem services.
11274358 - Recovery of diadema antillarum reduces macroalgal cover and increases abundance of juve...
11539668 - Sources of carbon and sulfur nutrition for consumers in three meromictic lakes of new y...
8477918 - Toxicological studies on debitterized neem oil (azadirachta indica).
16104768 - Rapid peroxyl radical scavenging capacity (psc) assay for assessing both hydrophilic an...
Publication Detail:
Type:  Journal Article     Date:  2012-07-23
Journal Detail:
Title:  Talanta     Volume:  99     ISSN:  1873-3573     ISO Abbreviation:  Talanta     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-09-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  883-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos-SP, Brazil.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Ultrasound-assisted ionic liquid/ionic liquid-dispersive liquid-liquid microextraction for the deter...
Next Document:  A stable and reproducible nanosilver-aggregation-4-mercaptopyridine surface-enhanced Raman scatterin...