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A biomass-derived Schiff base material composited with polylactic acid nanofiber membrane as selective fluorescent 'turn off/on' platform for Pb quantitative detection and characterization. | LitMetric
Herein, a biomass-derived compound Z1 is synthesized via 'one pot' method for detection Pb using fluorescence and visual dual-mode in aqueous solution. Z1 shows good response to Pb with a limit of detection (LOD) of 13.4 nM. Importantly, the coordination mode of Z1 with Pb is further evaluated by UV-vis and NMR spectroscopy and a 1:1 stoichiometry is identified. Furthermore, Z1 can be applied to detection Pb in practical samples with satisfactory recoveries in range of 96.0 %-112.0 % in real samples. Besides, Z1 is added into polylactic acid (PLA) solution and made as portable fluorescence nanofiber membrane for Pb detection. Further, Z1 responds to Pb with high selectivity and sensitivity and has been applied for tracking Pb changes in soil samples, zebrafish, and plant tissues. These results indicated that Z1 had great application potential in accurate detection Pb.
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