Fluorescence determination of Fe(<scp>iii</scp>) in drinking water using a new fluorescence chemosensor
Gasser M. Khairy, Alaa S. Amin, Sayed M. N. Moalla, Ayman Medhat, Nader Hassan
Abstract
. CEHC responds to Fe(iii) in a way that is more sensitive, selective, and quick to turn off the fluorescence than to other heavy metal ions. Selectivity was proved against seven other metal ions (Mn(ii), Al(iii), Cu(ii), Ni(ii), Zn(ii), Pb(ii), and Cd(ii)). The calibration curve was constructed based on the Stern-Volmer equation. The linear range was 2.50-150 μM with the correlation coefficient of 0.9994, and the LOD was 0.76 μM. The method was successfully applied to determine Fe(iii) in drinking water samples, and the accuracy of the chemosensor was validated by atomic absorption spectrometry.
Topics & Concepts
ChemistryFluorescenceCalibration curveMetal ions in aqueous solutionStoichiometryAnalytical Chemistry (journal)Detection limitQuenching (fluorescence)MetalLuminescenceIonInorganic chemistryNuclear chemistryChromatographyPhysical chemistryMaterials scienceOrganic chemistryPhysicsOptoelectronicsQuantum mechanicsMolecular Sensors and Ion DetectionElectrochemical Analysis and ApplicationsAnalytical Chemistry and Sensors