(1-Butyl-3-methylimidazolium Hexafluorophosphate) Based Sensor for Quantification of Eugenol Antioxidant

A simple, ultrasensitive and convenient electrochemical method has been developed for quantification of antioxidant eugenol, at multi-walled carbon nanotube (MWCNT) ionic liquid (1-Butyl 3-methylimidazolium hexafluorophosphate) glassy carbon based sensor. The electrochemical behavior of eugenol at the sensor was studied using square wave voltammetry as a function of concentration of eugenol. The voltammetric studies of eugenol at MWCNT-IL-Gel/GC sensor exhibited a well defined anodic peak for its oxidation in Britton-Robinson buffer at pH 10.5. Under optimized experimental condition the square wave oxidation peak current was linear over concentration range of 250 nM L-1 to 4000 nM L-1 with limit of detection (LOD) and limit of quantification of 87.6 nM L-1 and 292.2 nM L-1 respectively. The results indicate that the electrode coated with MWCNT-IL-Gel possess high sensitivity towards eugenol. Developed MWCNT-IL-Gel/GC sensor was successfully employed for the analysis of eugenol in real samples.