Label-Free and Ultrasensitive Detection of Butyrylcholinesterase and Organophosphorus Pesticides by Mn(II)-Based Electron Spin Resonance Spectroscopy with a Zero Background Signal
Li Tang, Chunyu Wang, Sizhu Tian, Zhimin Zhang, Yong Yu, Daqian Song, Ziwei Zhang
Abstract
. The spiked Chinese cabbage extract samples were analyzed, and the experimental results indicated that the recoveries were from 96.5 to 102.8%. The planted Chinese cabbage was sprayed with the paraoxon solution, and the residue amount of paraoxon in the extract was estimated by the method. The result obtained by the present method was consistent with that obtained by HPLC, which proved the practicability of this new method.
Topics & Concepts
ChemistryParaoxonElectron paramagnetic resonanceDetection limitButyrylcholinesteraseSpectroscopyManganeseAnalytical Chemistry (journal)Nuclear chemistryNuclear magnetic resonanceChromatographyAcetylcholinesteraseEnzymeOrganic chemistryQuantum mechanicsPhysicsAchéElectrochemical sensors and biosensorsElectrochemical Analysis and ApplicationsMolecular Sensors and Ion Detection