Room-temperature ionic liquid n-hexyl-3methylimidazolium
hexafluoro phosphate as a binder and
ZnO nanoparticle (ZnO/NPs) as a sensor were used to construct
a new ZnO/NPs carbon ionic liquid paste electrode
(ZnO/NPs/IL/CPE), which exhibited enhanced electrochemical
behavior as compared with the traditional carbon paste
electrode with paraffin for electrooxidation of Sudan I. This
modified electrode exhibited a potent and persistent electron
mediating behavior followed by well separated oxidation
peaks of Sudan I and vitamin B
. The peaks current of square
wave voltammograms (SWV) of Sudan I and vitamin B
6
increased linearly with their concentration in the ranges of
0.01–400 μM Sudan I and 0.5–800 μM vitamin B
. The
detection limits for Sudan I and vitamin B
were 0.008–
0.2 μM, respectively. The modified electrode has been successfully
applied for the assay of Sudan I and vitamin B
6
in
food samples.
کلید واژگان :
Vitamin B electrode. Food analysis 6. Sudan I. Ionic liquid. Modified
