A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its Application
Preparation, characterization, and application of a novel coated graphite rod thorium selective electrode based on thorium 8-hydroxyquinolate [thorium oxinate, Th(C9H6NO)4.2H2O] complex ionophore as a sensing material, dioctylphthalate (DOP) as a solvent mediator, and PVC as a matrix have been devel...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2003-10-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/3/10/424/ |
| _version_ | 1798004136960065536 |
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| author | Abeer M. El-Saied Mona A. Ahmed Hassan A. Arida |
| author_facet | Abeer M. El-Saied Mona A. Ahmed Hassan A. Arida |
| author_sort | Abeer M. El-Saied |
| collection | DOAJ |
| description | Preparation, characterization, and application of a novel coated graphite rod thorium selective electrode based on thorium 8-hydroxyquinolate [thorium oxinate, Th(C9H6NO)4.2H2O] complex ionophore as a sensing material, dioctylphthalate (DOP) as a solvent mediator, and PVC as a matrix have been developed. The coated graphite rod electrode exhibits a linear Nernstian response over the concentration range 5x10-6 - 1x10-1 mol l-1 of Th(IV) ions, with a calibration slope of 15.5 ± 0.5 mV/concentration decade and a detection limit of 1.6x10-6 mol l-1. It has a fast response time and can be used for a period of two months without any divergence in potentials. The proposed electrode reveals a good selectivity for Th(IV) cation over a varity of other cations and could be used in the pH range of (3 - 5). The sensor was successfully applied in the determination of thorium in real (monazite sand) sample. The average recovery obtained is ranging from 97.0 to 93.4% with standard deviation of 1.5% (n=8). |
| first_indexed | 2024-04-11T12:18:49Z |
| format | Article |
| id | doaj.art-efc5b0a3d1b44b2e94ef8b347a22e727 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T12:18:49Z |
| publishDate | 2003-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-efc5b0a3d1b44b2e94ef8b347a22e7272022-12-22T04:24:10ZengMDPI AGSensors1424-82202003-10-0131042443710.3390/s31000424A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its ApplicationAbeer M. El-SaiedMona A. AhmedHassan A. AridaPreparation, characterization, and application of a novel coated graphite rod thorium selective electrode based on thorium 8-hydroxyquinolate [thorium oxinate, Th(C9H6NO)4.2H2O] complex ionophore as a sensing material, dioctylphthalate (DOP) as a solvent mediator, and PVC as a matrix have been developed. The coated graphite rod electrode exhibits a linear Nernstian response over the concentration range 5x10-6 - 1x10-1 mol l-1 of Th(IV) ions, with a calibration slope of 15.5 ± 0.5 mV/concentration decade and a detection limit of 1.6x10-6 mol l-1. It has a fast response time and can be used for a period of two months without any divergence in potentials. The proposed electrode reveals a good selectivity for Th(IV) cation over a varity of other cations and could be used in the pH range of (3 - 5). The sensor was successfully applied in the determination of thorium in real (monazite sand) sample. The average recovery obtained is ranging from 97.0 to 93.4% with standard deviation of 1.5% (n=8).http://www.mdpi.com/1424-8220/3/10/424/Thorium ion-selective electrodePVC membraneThorium oxinate complexPotentiometryCoated graphite rod |
| spellingShingle | Abeer M. El-Saied Mona A. Ahmed Hassan A. Arida A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its Application Sensors Thorium ion-selective electrode PVC membrane Thorium oxinate complex Potentiometry Coated graphite rod |
| title | A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its Application |
| title_full | A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its Application |
| title_fullStr | A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its Application |
| title_full_unstemmed | A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its Application |
| title_short | A Novel Coated Graphite Rod Th(IV) Ion Selective Electrode Based On Thorium Oxinate Complex and Its Application |
| title_sort | novel coated graphite rod th iv ion selective electrode based on thorium oxinate complex and its application |
| topic | Thorium ion-selective electrode PVC membrane Thorium oxinate complex Potentiometry Coated graphite rod |
| url | http://www.mdpi.com/1424-8220/3/10/424/ |
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