Back to Search
Start Over
Fabrication of a PVC membrane samarium(III) sensor based on N,N′,N″-tris(4-pyridyl)trimesic amide as a selectophore
- Source :
-
Materials Science & Engineering: C . Mar2013, Vol. 33 Issue 2, p870-874. 5p. - Publication Year :
- 2013
-
Abstract
- Abstract: A new ion-selective electrode for Sm3+ ion is described based on the incorporation of N,N′,N″-tris(4-pyridyl)trimesic amide (TPTA) in a poly(vinylchloride) (PVC) matrix. The membrane sensor comprises nitrobenzene (NB) as a plasticizer, and oleic acid (OA) as an anionic additive. The sensor with the optimized composition shows a Nernstian potential response of 19.8±0.5mV decade−1 over a wide concentration range of 1.0×10−2 and 1×10−6 molL−1, with a lower detection limit of 4.7×10−7 molL−1 and satisfactor applicable pH range of 3.6–9.2. Having a short response time of less than 10s and a very good selectivity towards the Sm3+ over a wide variety of interfering cations (e.g. alkali, alkaline earth, transition and heavy metal ions) the sensor seemed to be a promising analytical tool for determination of the Sm3+. Hence, it was used as an indicator electrode in the potentiometric titration of samarium ion with EDTA. It was also applied to the direct samarium recovery in binary mixtures. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09284931
- Volume :
- 33
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: C
- Publication Type :
- Academic Journal
- Accession number :
- 84475920
- Full Text :
- https://doi.org/10.1016/j.msec.2012.11.014