A paper-based ratiometric fluorescence sensor based on carbon dots modified with Eu<sup>3+</sup> for the selective detection of tetracycline in seafood aquaculture water
Jialu Zhang, Yuanyuan Chen, Ji Qi, Qinglan Miao, Dongmei Deng, Haibo He, Xiaoxia Yan, Liqiang Luo
Abstract
at 450 nm is enhanced and the blue fluorescence of CDs at 617 nm is quenched by energy transfer in the presence of TC. Under optimal conditions, TC is selectively determined in the linear range from 0.1 μM to 100 μM with a detection limit of 0.03 μM by the step-by-step grafting method. In addition, the sealed paper chip could effectively prevent pollution and volatilization from the reagent. This technique has been used to analyze TC in seafood aquaculture water with satisfactory results.
Topics & Concepts
FluorescenceDetection limitReagentOne-StepMaterials scienceGraftingTap waterLinear rangeChipCarbon nanotubeMicrofluidic chipNanotechnologyMicrofluidicsChemistryChemical engineeringChromatographyComputer scienceEnvironmental scienceEnvironmental engineeringOpticsPhysicsComposite materialEngineeringPhysical chemistryTelecommunicationsPolymerCarbon and Quantum Dots ApplicationsAdvanced biosensing and bioanalysis techniquesAdvanced Nanomaterials in Catalysis