PMID- 25427515 OWN - NLM STAT- MEDLINE DCOM- 20150727 LR - 20141127 IS - 1873-0191 (Electronic) IS - 0928-4931 (Linking) VI - 33 IP - 2 DP - 2013 Mar 1 TI - A Ho(III) potentiometric polymeric membrane sensor based on a new four dentate neutral ion carrier. PG - 984-8 LID - S0928-4931(12)00552-8 [pii] LID - 10.1016/j.msec.2012.11.034 [doi] AB - In this research, we report a new Ho(3+)-PVC membrane electrode based on N-(4,5-dimethyl-2-(picolinamido)phenyl)picolinamide (H(2)Me(2)bpb) as a suitable ion carrier. Poly vinylchloride (PVC)-based membrane composed of H(2)Me(2)bpb with oleic acid (OA) as anionic additives, and o-nitrophenyloctyl ether (NPOE) as plasticized solvent mediator. The sensor exhibits a Nernstian slope of 20.1 +/- 0.2 mV decade(-1) over the concentration range of 1.0 x 10(-6) to 1.0 x 1(-2) mol L(-1), and a detection limit of 5.0 x 10(-7) mol L(-1) of Ho(3+) ions. The potentiometric response of the sensor is independent of the solution pH in the range of 3.5-9.4. It has a very short response time, in the whole concentration range (<10s), and can be used for at least eight weeks. The proposed electrode shows a good selectivity towards Ho(3+) ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. To assess its analytical applicability the proposed Ho(3+) sensor was successfully applied as an indicator electrode in the titration of Ho(3+) ion solutions in certified reference materials, alloy samples and for the determination of the fluoride ion in two mouthwash preparations. CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - Zamani, Hassan Ali AU - Zamani HA AD - Department of Applied Chemistry, Mashhad Branch, Islamic Azad University, Mashhad, Iran. Electronic address: haszamani@yahoo.com. FAU - Zanganeh-Asadabadi, Abbas AU - Zanganeh-Asadabadi A AD - Department of Applied Chemistry, Quchan branch, Islamic Azad University, Quchan, Iran. FAU - Rohani, Mitra AU - Rohani M AD - Department of Applied Chemistry, Quchan branch, Islamic Azad University, Quchan, Iran. FAU - Zabihi, Mohammad Saleh AU - Zabihi MS AD - Department of Applied Chemistry, Quchan branch, Islamic Azad University, Quchan, Iran. FAU - Fadaee, Javad AU - Fadaee J AD - Department of Applied Chemistry, Quchan branch, Islamic Azad University, Quchan, Iran. FAU - Ganjali, Mohammad Reza AU - Ganjali MR AD - Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran. FAU - Faridbod, Farnoush AU - Faridbod F AD - Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran. FAU - Meghdadi, Soraia AU - Meghdadi S AD - Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121124 PL - Netherlands TA - Mater Sci Eng C Mater Biol Appl JT - Materials science & engineering. C, Materials for biological applications JID - 101484109 RN - 0 (Membranes, Artificial) RN - 9002-86-2 (Polyvinyl Chloride) RN - W1XX32SQN1 (Holmium) SB - IM MH - Holmium/*analysis/chemistry MH - Hydrogen-Ion Concentration MH - *Ion-Selective Electrodes MH - Limit of Detection MH - *Membranes, Artificial MH - Polyvinyl Chloride/*chemistry MH - Potentiometry/*instrumentation/methods MH - Reproducibility of Results EDAT- 2013/03/01 00:00 MHDA- 2015/07/28 06:00 CRDT- 2014/11/28 06:00 PHST- 2010/11/05 00:00 [received] PHST- 2012/09/02 00:00 [revised] PHST- 2012/11/17 00:00 [accepted] PHST- 2014/11/28 06:00 [entrez] PHST- 2013/03/01 00:00 [pubmed] PHST- 2015/07/28 06:00 [medline] AID - S0928-4931(12)00552-8 [pii] AID - 10.1016/j.msec.2012.11.034 [doi] PST - ppublish SO - Mater Sci Eng C Mater Biol Appl. 2013 Mar 1;33(2):984-8. doi: 10.1016/j.msec.2012.11.034. Epub 2012 Nov 24.