An electrochemical sensor for warfarin determination based on covalent immobilization of quantum dots onto carboxylated multiwalled carbon nanotubes and chitosan composite film modified electrode

Simple and Fast Determination of Warfarin in Pharmaceutical Samples Using Boron‐doped Diamond Electrode in BIA and FIA Systems with Multiple Pulse Amperometric Detection

“…Some electroanalytical methods have also been used for WA determination in pharmaceutical samples, which can offer some advantages as a simple sample preparation, ease of miniaturization, high sensitivity and their comparative low‐cost. The electroanalysis of WA has been reported by square wave , cyclic voltammetry , differential pulse voltammetry , potentiometry , amperometry , HPLC with electrochemical detection , polarography and coulometric titration . In spite of success of these methods for WA determination, the simplicity and sampling rate required to the routine pharmaceutical analysis is poor.…”

“…This behavior suggests the WA mass transport process is controlled by diffusion on the BDDE, according to other works using a multiwalled‐carbon‐nanotube modified MnFe2O4 carbon paste and multiwalled‐carbon‐nanotube modified ZnCrFeO4 carbon paste . On the other hand, when the carbon paste electrode modified with magnetic Fe 3 O 4 nanoparticles and the glassy carbon electrode with CdS‐quantum dots were used, the WA mass transport process was controlled by adsorption, in both sensors.…”

“…The number of electrons for WA oxidation process on BDD electrode was estimated in 2.001±0.058. This value was also observed by other authors using mercury electrode and modified electrodes .…”

Highly selective differential pulse voltammetric determination of warfarin in pharmaceutical and biological samples using MnFe2O4/MWCNT modified carbon paste electrode

“…3 pharmaceuticals and biological fluids like urine and plasma [23][24][25] and it was diluted with water in a 10-mL volume flask. The test solution was transferred into the electrochemical cell to determine warfarin levels.…”

Synthesis of conductive polymeric ionic liquid/Ni nanocomposite and its application to construct a nanostructure based electrochemical sensor for determination of warfarin in the presence of tramadol

“…Recent data recommend that warfarin drug interactions might be the main cause of the bleeding effects in patients receiving anticoagulant therapy. Numerous methods such as high-performance liquid chromatography [15,16], capillary electrophoresis [17], liquid-liquid micro-extraction [18,19] and electrochemistry methods [20][21][22][23][24] have been described for the measurement of warfarin.…”