Non-enzymatic electrochemical determination of salivary cortisol using ZnO-graphene nanocomposites
Sherin Rison, Rijo Rajeev, Vinay S. Bhat, Agnus T. Mathews, Anitha Varghese, Gurumurthy Hegde
Abstract
M with a very low-level limit of detection value (0.15 nM). The demonstrated methodology has been excellently functional for the determination of salivary cortisol non-enzymatically at low-level concentration with enhanced selectivity despite the presence of interfering substances.
Topics & Concepts
GrapheneFourier transform infrared spectroscopyX-ray photoelectron spectroscopyCyclic voltammetryDielectric spectroscopyMaterials scienceDetection limitDifferential pulse voltammetryScanning electron microscopeAnalytical Chemistry (journal)NanocompositeElectrodeTransmission electron microscopyElectrochemistryGraphiteNuclear chemistryChemical engineeringChemistryNanotechnologyChromatographyComposite materialPhysical chemistryEngineeringElectrochemical sensors and biosensorsStress Responses and CortisolConducting polymers and applications