Journal
ELECTROANALYSIS
Volume 22, Issue 22, Pages 2650-2657Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201000291
Keywords
Carbon nanotubes; Glassy carbon; Electrochemical sensor; Quercetin; Flavonoids; Rutin; Poly(acrylic acid); Polyethylenimine
Categories
Funding
- CONICET
- SECyT-UNC
- ANPCyT
- Ministery of Science and Technology of Cordoba
Ask authors/readers for more resources
This work reports the highly sensitive detection of quercetin using glassy carbon electrodes modified with multiwall carbon nanotubes (MWCNT) dispersed in polyethylenimine and poly(acrylic acid). The adsorptive stripping with square wave voltammetric transduction allowed the detection of 7.5 nM quercetin after 1.0 min accumulation at open circuit potential. The amperometric detection at 0.150 V is reported as an easier and simpler alternative to determine quercetin, with detection limits of 0.2 mu M. The careful selection of the working conditions also made possible the detection of submicromolar levels of quercetin in the presence of excess of rutin. The proposed methodology was successfully used to quantify quercetin in onion samples.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available