Electrocatalytic oxidation of sodium levothyroxine with phenyl hydrazine as a mediator at carbon paste electrode: A cyclic voltammetric study

Electroanalytical Sensor Based on Unmodified Screen‐Printed Carbon Electrode for the Determination of Levo‐Thyroxine

“…The commercial screen printed carbon electrode (TE 100, CH instruments, USA) consists of carbon working electrode (3 mm diameter), counter electrode as carbon, the reference electrode being pseudo Ag/AgCl. Carbon paste working electrode (3 mm diameter) was prepared according to the procedure described elsewhere [25].…”

“…Alternately, modified carbon paste electrodes have also been studied using cetyltrimethyl ammonium bromide (CTAB) [24] and phenylhydrazin [25]. Recently the bare Edge plane pyrolytic graphite (EPPG) electrode has also been investigated for the determination of T 4 in biological and clinical samples [26].…”

Development of AChE biosensor for the determination of methyl parathion and monocrotophos in water and fruit samples: A cyclic voltammetric study

“…The paste was packed into the cavity of homemade PVC (3 mm in diameter) and then smoothed on a weighing paper. The electrical contact was provided by copper wire connected to the paste at the end of the tube [27][28][29].…”

Voltammetric determination of dopamine in the presence of ascorbic acid and uric acid at sodium dodecyl sulphate/reduced graphene oxide modified carbon paste electrode

“…It is well known that cationic, anionic and nonionic surfactants not only endow the electrode solution interface with different electrical properties, but also adsorb at electrode surface or aggregate into super molecular structures to change electrochemical process [26][27][28][29]. Swamy et al previously reported immobilisation of surfactant on the surface of electrode to improve the electrochemical response of some bioactive molecules.…”