A Novel Fluorimetric Bulk Optode Membrane Based on NOS Tridentate Schiff Base for Selective Optical Sensing of Al3+ Ions.
J Fluoresc
; 26(6): 1927-1938, 2016 Nov.
Article
in En
| MEDLINE
| ID: mdl-27492681
ABSTRACT
A novel fluorimetric optode has been developed for the highly selective and sensitive for the determination of ultra trace amounts of Al3+ ions. The proposed fluorescent optode is based on the incorporation of a simple and effective fluorescent sensor tridentate NOS Schiff base N-(2-hydroxynaphthylidene)-2-aminothiophenol (H2L) in a plasticized PVC containing KTpClPB as a lipophilic anionic additive. H2L was synthesized by a facile one-step Schiff base reaction. The plasticized PVC-membrane displays a calibration response for Al3+ ions over a wide concentration range from 1.0 × 10-9 to 4.4 × 10-3 mol/L. The fluorescence signal of the optode membrane can be easily recovered by immersion in 0.01 M EDTA. In addition to high stability and reproducibility, the sensor shows a unique selectivity towards Al3+ ion with respect to common co-existing cations, particularly Ga3+and In3+. The proposed optode was applied successfully for determination of Al3+ in some real samples, including bottled drinking waters, bottled mineral waters and soft drinks.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Schiff Bases
/
Biosensing Techniques
/
Optics and Photonics
/
Aluminum
/
Fluorometry
/
Aniline Compounds
/
Membranes, Artificial
Language:
En
Journal:
J Fluoresc
Journal subject:
BIOFISICA
Year:
2016
Document type:
Article
Affiliation country:
Egypt