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Threaded 3D microfluidic paper analytical device-based ratiometric fluorescent sensor for background-free and visual detection of organophosphorus pesticides

EngineeringVisual DetectionPesticide-residue AnalysisAnalytical MicrosystemsLab-on-a-chipOrganophosphorus PesticidesAnalytical ChemistryMicrofluidicsChemical SensorBiophysics