Optical chemical sensor of Gd(<scp>iii</scp>) based on 5-(2′-bromophenyl- azo)-6-hydroxypyrimidine-2,4-dione immobilized on poly(methyl methacrylate) and 2-nitrophenyloctylether matrix
Eslam M. I. Moustafa, Alaa S. Amin, Eman R. Darwish
Abstract
The offered optode sensor membrane has been employed to monitor Gd(iii) in soil, sediments, river water, and urine with an internal standard addition method and compared statistically with the ICP-OES method. The results revealed calculated t-values between 1.11-1.85, whereas F values were in the range of 2.46-3.77 which did not exceed the theoretical values, indicating no significant difference at 95% confidence level. The observed percent recovery is in the range of 97.24-102.52%.
Topics & Concepts
OptodeChemistryDetection limitAbsorbanceIonophoreAnalytical Chemistry (journal)SelectivityMolar absorptivityMembraneNuclear chemistryIonChromatographyOrganic chemistryCatalysisOpticsBiochemistryPhysicsAnalytical Chemistry and SensorsElectrochemical Analysis and ApplicationsMolecular Sensors and Ion Detection