Journal
CHEMOSENSORS
Volume 9, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/chemosensors9020023
Keywords
potentiometric sensors; lanthanides; multisensory systems; sensor arrays
Funding
- Russian Foundation of Basic Research (RFBR) [18-33-01015]
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This study discusses quantification of rare earth metals in complex mixtures using a novel multi-ionophore approach with potentiometric sensor arrays. The multi-ionophore array can accurately quantify individual lanthanides in low concentrations, showing promising performance compared to conventional monoionophore sensors.
This work aims to discuss quantification of rare earth metals in a complex mixture using the novel multi-ionophore approach based on potentiometric sensor arrays. Three compounds previously tested as extracting agents in reprocessing of spent nuclear fuel were applied as ionophores in polyvinyl chloride (PVC)-plasticized membranes of potentiometric sensors. Seven types of sensors containing these ionophores were prepared and assembled into a sensor array. The multi-ionophore array performance was evaluated in the analysis of Ln(3+) mixtures and compared to that of conventional monoionophore sensors. It was demonstrated that a multi-ionophore array can yield RMSEP (root mean-squared error of prediction) values not exceeding 0.15 logC for quantification of individual lanthanides in binary mixtures in a concentration range 5 to 3 pLn(3+).
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