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Development of a Voltammetric Procedure Based on DNA Interaction for Sensitive Monitoring of Chrysoidine, A Banned Dye, in Foods and Textile Effluents, Sensors & Actuators B, 2014, 202, 224-231, A.A. Ensafi, H.R. Jamei, E.l Heydari-Bafrooei, B. Rezaei

Here, theinteractionofchrysoidine(CSD)withads-DNAanditsdeterminationinfoodsandtextile
effluents wasassessed.Theinteractionwasstudiedbymonitoringthechangeintheoxidationpeaks
of guanine,adenineandCSDusingdifferentialpulsevoltammetry(DPV).Inordertoinvestigatethe
interaction ofCSDwithds-DNA,apencilgraphiteelectrode(PGE)modifiedwithmultiwallcarbonnano-
tubes (MWCNTs)andads-DNAwasused.Poly(diallyldimethylammoniumchloride),PDDA,wasused
to establishMWCNTswithPGEandwiththeds-DNA.ElectrochemicaloxidationofCSDbondedon
DNA/MWCNTs-PDDA/PGE anddecreasingintheintensitiesoftheoxidationsignalsofguanineandade-
nine (oftheds-DNA),aftertheirinteractionwithCSD,wereusedtoobtaintheanalyticalsignals.CSD
could preconcentrateatDNA/MWCNTs-PDDA/PGEsurface.Theadvantagesoftheproposedmethodare
the extremelylowdetectionlimit(0.03gmL−1), widelineardynamicrange(0.05–15.00gmL−1), selec-
tivity andcosteffectiveforCSDdetermination.Thecapabilityofthebiosensorwasvalidatedwithanalysis
of CSDinfish,saucesandtextileeffluents.

Journal Papers
Month/Season: 
June
Year: 
2014