Reduced Graphene Oxide/Gold Nanoparticles Modified Screen-Printed Electrode for the Determination of Palmitic Acid

Palm oil is one of the major oils and fats produced in world today. The quality palm crucial to be investigated, indices free fatty acid (FFA) content. Therefore, this study, an electrochemical approach for determination FFA has been explored as alternative replace conventional method (titration method). was developed based on electrochemically reduced graphene oxide (rGO) coupled with gold nanoparticles (AuNPs) deposited onto a screen-printed carbon electrode (SPCE) via drop-casting technique. voltammetric behaviour 2-methyl-1,4-naphthoquinone (VK3) presence palmitic at modified investigated acetonitrile/water mixture containing lithium perchlorate (LiClO4). detection reduction VK3 form corresponding hydroquinone which proportional concentration acid. Under optimum conditions, showed good linear relationship towards ranging from 0.192 mM 0.833 limit 0.015 mM. exploration system expected achieve high sensitivity excellent selectivity content oil.