Voltammetric Determination of Acrylamide Using Coal Tar Pitch Modified Pencil Graphite Electrode by SWV

Abstract

The adverse effects of acrylamide (AA) on humans are being clear, especially after a series of related investigations reported the dependance of consuming foods that prepared by exposing to high temperature for a long-time and cancer risk. Accurate determination of AA in food samples at trace amount is considered the rst step to overcome this signi cant problem. The determination of AA using coal tar pitch modi ed pencil graphite (PGE/CTP) electrode was reported. The electrochemical behavior of AA was studied on PGE/CTP electrode in different medium acidities (pH) of phosphate and Briton-Robinson (BR) buffer solutions by employing square wave voltammetry (SWV). Linear sweep voltammetry (LSV) technique was applied to determine the mass transfer mode of AA from bulk solution to the PGE/CTP electrode surface. The optimum conditions were using phosphate buffer solution (PBS) at pH 7.0. The linear relationship among peak current and AA concentration was in the range 1000.0 nM to 0.5 nM. The limit of detection for detection of AA was 0.2094 nM and the limit of quantitation for quanti cation was 0.6912 nM. In addition, the PGE/CTP electrode as the sensor was successfully used for the determination of AA in instant coffee sample.

Investigation of Electrochemical Properties and Behaviors of NBITEP Molecule; Availability of Sensor Electrode in Determination of Hg2+ with SWAdSV Technique

“…Multiwall carbon nanotubes, categorized as innovative carbon materials, find widespread use across various domains, particularly in electrochemical sensing. This popularity is attributed to their high porosity, hollow structure, exceptional electrical conductivity, substantial specific surface area, and favorable biological activity (Hu et al, 2011;Islamoğlu et al, 2023;Korkmaz et al, 2023). Despite the many superior characteristics of multiwall carbon nanotubes, there is ongoing interest in enhancing their unique performance further.…”