Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) Ions
Two novel polymeric membrane sensors for the analysis of Pb(II) have been developed based ontwo therapeutic drugs, thiopental (TP) and phenytoin (PT) as two new ionophores and potassium tetrakis(p-chlorophenyl) borate (KTpClPB) as a lipophilic additive, in plasticized PVC membranes. The sensors show...
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| Format: | Article |
| Language: | English |
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MDPI AG
2009-03-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/9/3/1860/ |
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| author | Yasser M. Abd EL-Karem Salem M. Hamza Salem M. Hamza Nashwa M.H. Rizk Samah S. Abbas |
| author_facet | Yasser M. Abd EL-Karem Salem M. Hamza Salem M. Hamza Nashwa M.H. Rizk Samah S. Abbas |
| author_sort | Yasser M. Abd EL-Karem |
| collection | DOAJ |
| description | Two novel polymeric membrane sensors for the analysis of Pb(II) have been developed based ontwo therapeutic drugs, thiopental (TP) and phenytoin (PT) as two new ionophores and potassium tetrakis(p-chlorophenyl) borate (KTpClPB) as a lipophilic additive, in plasticized PVC membranes. The sensors show a Nernstian response for Pb(II) ions over the wide concentration ranges of 1×10-2 - 7×10-6 M and 1×10-2 - 8×10-6 M for the sensors based on thiopental and phenytoin, respectively. The proposed sensors have a fast response time and can be used for more than nine weeks without any considerable divergence in potentials. The sensors exhibit comparatively good selectivity with respect to alkaline, alkaline earth and some transition and heavy metal ions. They were employed for direct determination of lead in solder alloys and in galena rocks with a good agreement with the obtained results by atomic absorption spectroscopy. |
| first_indexed | 2024-04-11T18:27:28Z |
| format | Article |
| id | doaj.art-48daac566bce4b969d0482b654f30f63 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T18:27:28Z |
| publishDate | 2009-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-48daac566bce4b969d0482b654f30f632022-12-22T04:09:34ZengMDPI AGSensors1424-82202009-03-01931860187510.3390/s90301860Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) IonsYasser M. Abd EL-KaremSalem M. HamzaSalem M. HamzaNashwa M.H. RizkSamah S. AbbasTwo novel polymeric membrane sensors for the analysis of Pb(II) have been developed based ontwo therapeutic drugs, thiopental (TP) and phenytoin (PT) as two new ionophores and potassium tetrakis(p-chlorophenyl) borate (KTpClPB) as a lipophilic additive, in plasticized PVC membranes. The sensors show a Nernstian response for Pb(II) ions over the wide concentration ranges of 1×10-2 - 7×10-6 M and 1×10-2 - 8×10-6 M for the sensors based on thiopental and phenytoin, respectively. The proposed sensors have a fast response time and can be used for more than nine weeks without any considerable divergence in potentials. The sensors exhibit comparatively good selectivity with respect to alkaline, alkaline earth and some transition and heavy metal ions. They were employed for direct determination of lead in solder alloys and in galena rocks with a good agreement with the obtained results by atomic absorption spectroscopy.http://www.mdpi.com/1424-8220/9/3/1860/Lead (II)ThiopentalPhenytoinGalena rocksSolder alloys |
| spellingShingle | Yasser M. Abd EL-Karem Salem M. Hamza Salem M. Hamza Nashwa M.H. Rizk Samah S. Abbas Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) Ions Sensors Lead (II) Thiopental Phenytoin Galena rocks Solder alloys |
| title | Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) Ions |
| title_full | Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) Ions |
| title_fullStr | Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) Ions |
| title_full_unstemmed | Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) Ions |
| title_short | Thiopental and Phenytoin as Novel Ionophores for Potentiometric Determination of Lead (II) Ions |
| title_sort | thiopental and phenytoin as novel ionophores for potentiometric determination of lead ii ions |
| topic | Lead (II) Thiopental Phenytoin Galena rocks Solder alloys |
| url | http://www.mdpi.com/1424-8220/9/3/1860/ |
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