Electrochemical Sensor for Tryptophan Determination Based on Trimetallic-CuZnCo-Nanoparticle-Modified Electrodes.
Adina ArvinteAna-Lacramioara LungociAdina CoroabăMariana PintealăPublished in: Molecules (Basel, Switzerland) (2023)
The superior properties of electrodeposited trimetallic CuZnCo nanoparticles, arising from the synergistic effect of combining the unique features of metallic components, were confirmed using voltametric measurements. The surface morphology and structure of the as-prepared electrocatalysts were determined using scanning electron microscopy, energy-dispersive X-ray, and X-ray photoelectron spectroscopy techniques. Here, the trimetallic CuZnCo nanoparticles were synthesized as a powerful redox probe and highly efficient signal amplifier for the electrochemical oxidation of tryptophan. Differential pulse voltammetry studies showed a linear relationship with a tryptophan concentration of 5-230 μM, and the low detection limit was identified at 1.1 μM with a sensitivity of 0.1831 μA μM -1 cm -2 .
Keyphrases
- electron microscopy
- highly efficient
- molecularly imprinted
- solid phase extraction
- ionic liquid
- label free
- gold nanoparticles
- high resolution
- electron transfer
- blood pressure
- hydrogen peroxide
- solid state
- living cells
- reduced graphene oxide
- gas chromatography mass spectrometry
- computed tomography
- walled carbon nanotubes
- quantum dots
- loop mediated isothermal amplification
- nitric oxide
- tandem mass spectrometry
- gas chromatography
- real time pcr
- iron oxide
- dual energy
- neural network