Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1430498 | Materials Science and Engineering: C | 2009 | 6 Pages |
Abstract
The biological properties of the lutetium as well as other lanthanide ions, primarily based on their similarity to calcium, have been the bases for research into potential therapeutic applications of lanthanide series since the early part of the twentieth century. In this research, a Lu(III) potentiometric membrane sensor based on N,Nâ²-bis(2-pyridinecarboxamide)-1,2-ethane (PCAE) is described. The sensor exhibits a Nernstian response over a concentration range of 1.0 Ã 10â 6 mol Lâ 1-1.0 Ã 10â 1 mol Lâ 1, with a detection limit of 6.0 Ã 10â 7 mol Lâ 1. The best performance was achieved with a membrane composition, consisting of 30% PVC, 63% o-nitrophenyl octyl ether (NPOE), 5% PCAE and 2% sodium tetraphenylborate (NaTPB). It was found that at the pH range of 4.0-9.0, the potential response of the sensor was not affected by the pH. Furthermore, the electrode presents satisfactory reproducibility, very fast response time (5 s) and relatively good discriminating ability for Lu(III) ions with respect to many common cations and other lanthanide ions. The sensor has been applied to the determination of Lu(III) in human serum and in some soil samples where domestic devices were stored.
Related Topics
Physical Sciences and Engineering
Materials Science
Biomaterials
Authors
Mohammad Reza Ganjali, Parviz Norouzi, Alireza Atrian, Farnoush Faridbod, Soraia Meghdadi, Masoud Giahi,