Quantitative Monitoring of Thulium Ions by a New Thulium Selective Polymeric Membrane Sensor
Authors: Zamani, Hassan Ali; Naghavi-Reyabbi, Fatemeh; Mohammadhosseini, Majid; Feizyzadeh, Babak; Abedi, Mohammad Reza; Faridbod, Farnoush; Ganjali, Mohammad Reza
Source: Sensor Letters, Volume 10, Numbers 1-2, January/February 2012 , pp. 112-116(5)
Publisher: American Scientific Publishers
Abstract:A new thulium(III) potentiometric sensor based on a membrane containing 2% sodium tetraphenyl borate (NaTPB), 65% dibutylphthalate (DBP), 33% N-(4-acetyl-3-cyano-5-methlfuran-2-yl)acetamide (ACMA), and 30% poly(vinyl chloride) (PVC) has been fabricated. The sensor exhibits a Nernstian response in the concentration range of 1.0 × 10−6 - 1.0 × 10−2 mol L−1 and a detection limit of 6.5 × 10−7 mol L−1. The electrode works well in the pH range of 3.1-9.5 and gives a satisfactory selectivity pattern as compared to most of the alkali, alkaline earth, some transition and heavy metal ions. The proposed Tm(III) sensor was successfully applied to the determination of Tm3+ ion in certified reference materials.
Document Type: Research article
Publication date: 2012-01-01
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