P1.3.5 Europium(III) ion detection in water by a new luminescent optical fibre sensor
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.3 Sensors Based on Optical Techniques
- Author(s)
- F. Sainz-Gonzalo, J. Fernández-Sánchez, A. Fernández-Gutiérrez - Dpt. of Analytical Chemistry, University of Granada (Spain), M. Casimiro, C. Popovici, I. Fernández, F. Ortiz - Laboratory of Organic Chemistry, University of Almería (Spain), C. Elosúa, F. Arregui, I. Matías - Dpt. of Electrical and Electronic Engineering, Public University of Navarre (Spain)
- Pages
- 939 - 941
- DOI
- 10.5162/IMCS2012/P1.3.5
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
A new europium(III) luminescent optical fibre sensor based on a tridentate bis(phosphinic amide)-phosphine oxide PhPO(C6H4POPhN(CH(CH3)2)2)2 is described. The ligand was successfully immobilized on PVC membrane on optical fibre by dip coating technique. The reaction between europium(III) ion and ligand produced a strong luminescent complex of stoichiometry, which possessed a maximum emission peak at 612 nm. The sensor luminescence response showed an exponential behavior versus logarithmic concentration of europium(III) ions (10^-8 - 10^-3 M) in aqueous solution with a correlation factor of R2 = 0.9918, and an acceptable response time (t90-t10) of 92 seconds. This optode is the first luminescent optical fibre sensor for detecting europium(III) ions in water.