“…Electrochemical techniques on the other hand are reported as ecofriendly and considered as highly sensitive, selective and convenient tool with fast response and low cost as compared to the other routine analytical techniques. 21 Various modied electrodes, such as boron doped diamond electrode, 11 carbon ionic liquid electrode modied with carbon nanotubes (CNTs) and cobalt hydroxide nanoparticles, 4 drug membrane sensors, carbon paste electrode and glassy carbon electrodes modied with CNT's 3,[22][23][24][25][26] have been used for the melatonin determination. However, the presence of higher concentration of some metabolites such as ascorbic acid and uric acid strongly interfere in the selective determination of melatonin in biological samples.…”