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Highly sensitive sensing of zinc(II) by development and characterization of a PVC-based fluorescent chemical sensor

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Academic year: 2021

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Fig. 1. Structure of 1-methyl-1-phenyl-3-[1-hydroxyimino-2-(succinimido)- 1-methyl-1-phenyl-3-[1-hydroxyimino-2-(succinimido)-ethyl]cyclobutane (MCB) dye.
Fig. 2. Excitation and emission spectra of MCB dye in different solvents. (a) ACN ( ex = 430 nm,  em = 520 nm), (b) EtOH ( ex = 434 nm,  em = 530 nm), (c) CHCl 3
Fig. 4 shows the fluorescence spectra of MCB based optode membrane exposed to solutions containing different  concentra-tions of Zn 2+ , which have been recorded at  ex = 420 nm and
Fig. 7. Successive responses of the MCB membrane to 2.6× 10 −6 mol L −1 Zn 2+ at pH = 6.0 (Reg = regeneration).

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