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Özbek O, Kalay E, Cetin A, Isildak Ö, Sinan Tokalı F, Nuri Aslan O, Isildak I. Synthesis and Potentiometric Sensor Applications of a Hydrazone Derivative Molecule: Fast and Selective Determination of Cobalt(II) Ions. ChemistrySelect 2022. [DOI: 10.1002/slct.202201307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Oguz Özbek
- Science and Technology, Application and Research Center Zonguldak Bülent Ecevit University 67600 Zonguldak Turkey
| | - Erbay Kalay
- Department of Material and Material Processing Technologies, Kars Vocational School Kafkas University Kars 36100 Turkey
| | - Alper Cetin
- Faculty of Science and Arts, Departmet of Molecular Biology and Genetics Zonguldak Bülent Ecevit University 67100 Zonguldak Turkey
| | - Ömer Isildak
- Department of Chemistry, Faculty of Science and Arts Tokat Gaziosmanpasa University 60250 Tokat Turkey
| | - Feyzi Sinan Tokalı
- Department of Material and Material Processing Technologies, Kars Vocational School Kafkas University Kars 36100 Turkey
| | - Osman Nuri Aslan
- Eastern Anatolia High Technology Application and Research Center Atatürk University Erzurum 25240 Turkey
| | - Ibrahim Isildak
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering Yildiz Technical University 34220 Istanbul Turkey
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Synthesis, metal ion complexation and first use of a thia-aza substituted macrocyclic diamide as a novel sensing material for preparation of selective and sensitive poly(vinyl chloride)-membrane potentiometric sensors for Ag+ ion. J INCL PHENOM MACRO 2013. [DOI: 10.1007/s10847-013-0327-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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An efficient and selective flourescent chemical sensor based on 5-(8-hydroxy-2-quinolinylmethyl)-2,8-dithia-5-aza-2,6-pyridinophane as a new fluoroionophore for determination of iron(III) ions. A novel probe for iron speciation. Anal Chim Acta 2012; 761:169-77. [PMID: 23312328 DOI: 10.1016/j.aca.2012.11.029] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 11/13/2012] [Accepted: 11/16/2012] [Indexed: 11/20/2022]
Abstract
A novel fluorescent chemical sensor for the highly sensitive and selective determination of Fe(3+) ions in aqueous solutions is prepared. The iron sensing system was prepared by incorporating 5-(8-hydroxy-2-quinolinylmethyl)-2,8-dithia-5-aza-2,6-pyridinophane (L) as a neutral Fe(3+)-selective fluoroionophore in the plasticized PVC membrane containing sodium tetraphenylborate as a liphophilic anionic additive. The response of the sensor is based on the strong fluorescence quenching of L by Fe(3+) ions. At pH 5.5, the proposed sensor displays a calibration curve over a wide concentration range from 6.0 × 10(-4) to 1.0 × 10(-7) M, with a relatively fast response time of less than 2 min. In addition to a high stability and reproducibility, the sensor shows a unique selectivity toward Fe(3+) ion with respect to common coexisting cations. The proposed fluorescence optode was applied to the determination of iron(III) content of straw of rice, spinach and different water samples. The fluorescent sensor was also used as a novel probe for Fe(3+)/Fe(2+) speciation in aqueous solution.
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Isa I, Mustafar S, Ahmad M, Hashim N, Ghani S. Cobalt(II) selective membrane electrode based on palladium(II) dichloro acetylthiophene fenchone azine. Talanta 2011; 87:230-4. [DOI: 10.1016/j.talanta.2011.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 09/30/2011] [Accepted: 10/04/2011] [Indexed: 11/25/2022]
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Bandi KR, Singh AK, Kamaluddin, Jain AK, Gupta VK. Electroanalytical Studies on Cobalt(II) Ion-Selective Sensor of Polymeric Membrane Electrode and Coated Graphite Electrode Based on N2O2 Salen Ligands. ELECTROANAL 2011. [DOI: 10.1002/elan.201100461] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gupta VK, Ganjali MR, Norouzi P, Khani H, Nayak A, Agarwal S. Electrochemical Analysis of Some Toxic Metals by Ion-Selective Electrodes. Crit Rev Anal Chem 2011; 41:282-313. [PMID: 28094545 DOI: 10.1080/10408347.2011.589773] [Citation(s) in RCA: 349] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
An overview of potentiometric sensors that are capable of detecting toxic heavy metal ions in environmental samples is presented and discussed. Notwithstanding the tremendous work performed so far, it is obvious that still several limitations do exist in terms of selectivity, limits of detection, dynamic ranges, applicability to specific problems, and reversibility. A survey on important advances in potentiometric sensors with regard to high selectivity, lower detection limit, fast response time, and on-line environmental analysis is presented in this review article. [Supplemental materials are available for this article. Go to the publisher's online edition of Critical Reviews in Analytical Chemistry to view the free supplemental file.].
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Affiliation(s)
- Vinod K Gupta
- a Department of Chemistry , Indian Institute of Technology Roorkee , Roorkee , India.,b Chemistry Department , King Fahd University of Petroleum and Minerals , Dhahran , Saudi Arabia
| | - M R Ganjali
- c Centre of Excellence in Electrochemistry , University of Tehran , Tehran , Iran
| | - P Norouzi
- c Centre of Excellence in Electrochemistry , University of Tehran , Tehran , Iran
| | - H Khani
- d Iranian Research and Development Center for Chemical Industries, Academic Center for Education, Culture and Research , Tehran , Iran
| | - Arunima Nayak
- a Department of Chemistry , Indian Institute of Technology Roorkee , Roorkee , India
| | - Shilpi Agarwal
- a Department of Chemistry , Indian Institute of Technology Roorkee , Roorkee , India
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Babashkina MG, Safin DA, Bolte M, Srebro M, Mitoraj M, Uthe A, Klein A, Köckerling M. Intramolecular hydrogen bonding controls 1,3-N,S- vs. 1,5-S,S′-coordination in NiII complexes of N-thiophosphorylated thioureas RNHC(S)NHP(S)(OiPr)2. Dalton Trans 2011; 40:3142-53. [DOI: 10.1039/c0dt01382j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Safin DA, Babashkina MG, Bolte M, Klein A. Synthesis and characterization of N-phosphorylated thioureas RNHC(S)NHP(O)(OiPr)2 (R = 2-MeC6H4, 2,6-Me2C6H3, 2,4,6-Me2C6H3). J CHEM SCI 2010. [DOI: 10.1007/s12039-010-0046-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Safin DA, Babashkina MG, Bolte M, Klein A. Synthesis and characterization of N-thiophosphorylated thioureas RC(S)NHP(S)(OiPr)2 (p-(4-imidazol-1-yl)–C6H4NH, p-NC–C6H4NH, (CH2CH–CH2)2N): Unexpected formation of o-HO–C6H4NHC(S)NHP(S)(OiPr)2 from p-NC–C6H4NHC(S)NHP(S)(OiPr)2. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
AbstractA new all plastic sensor for Co2+ ions based on 2-amino-5 (hydroxynaphtyloazo-1′)-1,3,4 thiadiazole (ATIDAN) as ionophore was prepared. The electrode exhibits a low detection limit of 1.5 × 10−6 mol L−1 and almost theoretical Nernstian slope in the activity range 4.0 × 10−6–1 × 10−1 mol L−1 of cobalt ions. The response time of the sensor is less than 10 s and it can be used over a period of 6 months without any measurable divergence in potential. The proposed sensor shows a fairly good selectivity for Co(II) over other metal ions. The electrode was successfully applied for determination of Co2+ in real samples and as an indicator electrode in potentiometric titration of Co2+ ions with EDTA.
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An efficient and selective flourescent optode membrane based on 7-[(5-chloro-8-hydroxy-7-quinolinyl)methyl]-5,6,7,8,9,10-hexahydro-2H-1,13,4,7,10-benzodioxatriazacyclopentadecine-3,11(4H,12H)-dione as a novel fluoroionophore for determination of cobalt(II) ions. Anal Chim Acta 2008; 630:57-66. [DOI: 10.1016/j.aca.2008.09.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Revised: 09/02/2008] [Accepted: 09/15/2008] [Indexed: 11/18/2022]
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Safin DA, Babashkina MG, Gimadiev TR, Bolte M, Pinus MV, Krivolapov DB, Litvinov IA. Complexes of N-thiophosphorylthiourea (EtO)2P(O)CH2C6H4-4-[NHC(S)NHP(S)(OiPr)2] with Zn(II), Cd(II), Co(II) and Cu(PPh3)(I). Polyhedron 2008. [DOI: 10.1016/j.poly.2008.06.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Electroanalytical studies on cobalt(II) selective potentiometric sensor based on bridge modified calixarene in poly(vinyl chloride). Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2008.02.085] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Safin DA, Sokolov FD, Gimadiev TR, Brusko VV, Babashkina MG, Chubukaeva DR, Krivolapov DB, Litvinov IA. Complexes ofN-ThiophosphorylthioureatBuNHC(S)NHP(S)(OiPr)2 with Zinc(II), Cadmium(II), Nickel(II), and Cobalt(II) Cations. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200700549] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Faridbod F, Norouzi P, Dinarvand R, Ganjali MR. Developments in the Field of Conducting and Non-conducting Polymer Based Potentiometric Membrane Sensors for Ions Over the Past Decade. SENSORS (BASEL, SWITZERLAND) 2008; 8:2331-2412. [PMID: 27879825 PMCID: PMC3673421 DOI: 10.3390/s8042331] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Accepted: 04/02/2008] [Indexed: 12/07/2022]
Abstract
Many research studies have been conducted on the use of conjugated polymers in the construction of chemical sensors including potentiometric, conductometric and amperometric sensors or biosensors over the last decade. The induction of conductivity on conjugated polymers by treating them with suitable oxidizing agents won Heeger, MacDiarmid and Shirakawa the 2000 Nobel Prize in Chemistry. Common conjugated polymers are poly(acetylene)s, poly(pyrrole)s, poly(thiophene)s, poly(terthiophene)s, poly(aniline)s, poly(fluorine)s, poly(3-alkylthiophene)s, polytetrathiafulvalenes, polynapthalenes, poly(p-phenylene sulfide), poly(p-phenylenevinylene)s, poly(3,4-ethylenedioxythiophene), polyparaphenylene, polyazulene, polyparaphenylene sulfide, polycarbazole and polydiaminonaphthalene. More than 60 sensors for inorganic cations and anions with different characteristics based on conducting polymers have been reported. There have also been reports on the application of non-conducting polymers (nCPs), i.e. PVC, in the construction of potentiometric membrane sensors for determination of more than 60 inorganic cations and anions. However, the leakage of ionophores from the membranes based on these polymers leads to relatively lower life times. In this article, we try to give an overview of Solid-Contact ISE (SCISE), Single-Piece ISE (SPISE), Conducting Polymer (CP)-Based, and also non-conducting polymer PVC-based ISEs for various ions which their difference is in the way of the polymer used with selective membrane. In SCISEs and SPISEs, the plasticized PVC containing the ionophore and ionic additives govern the selectivity behavior of the electrode and the conducting polymer is responsible of ion-to-electron transducer. However, in CPISEs, the conducting polymer layer is doped with a suitable ionophore which enhances the ion selectivity of the CP while its redox response has to be suppressed.
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Affiliation(s)
- Farnoush Faridbod
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
| | - Parviz Norouzi
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
| | - Rassoul Dinarvand
- Medical Nanotechnology Research Centre, Medical Sciences/University of Tehran, Tehran, P.O. Box 14155-6451, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
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Faridbod F, Ganjali MR, Dinarvand R, Norouzi P, Riahi S. Schiff's Bases and Crown Ethers as Supramolecular Sensing Materials in the Construction of Potentiometric Membrane Sensors. SENSORS (BASEL, SWITZERLAND) 2008; 8:1645-1703. [PMID: 27879786 PMCID: PMC3663017 DOI: 10.3390/s8031645] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2007] [Accepted: 02/22/2008] [Indexed: 12/07/2022]
Abstract
Ionophore incorporated PVC membrane sensors are well-established analyticaltools routinely used for the selective and direct measurement of a wide variety of differentions in complex biological and environmental samples. Potentiometric sensors have someoutstanding advantages including simple design and operation, wide linear dynamic range,relatively fast response and rational selectivity. The vital component of such plasticizedPVC members is the ionophore involved, defining the selectivity of the electrodes' complexformation. Molecular recognition causes the formation of many different supramolecules.Different types of supramolecules, like calixarenes, cyclodextrins and podands, have beenused as a sensing material in the construction of ion selective sensors. Schiff's bases andcrown ethers, which feature prominently in supramolecular chemistry, can be used assensing materials in the construction of potentiometric ion selective electrodes. Up to now,more than 200 potentiometric membrane sensors for cations and anions based on Schiff's bases and crown ethers have been reported. In this review cation binding and anioncomplexes will be described. Liquid membrane sensors based on Schiff's bases and crownethers will then be discussed.
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Affiliation(s)
- Farnoush Faridbod
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
| | - Rassoul Dinarvand
- Medical Nanotechnology Research Centre, Medical Sciences/University of Tehran, Tehran, P.O. Box 14155-6451, Iran
| | - Parviz Norouzi
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
| | - Siavash Riahi
- Institute of Petroleum Engineering, Faculty of Engineering, University of Tehran, Tehran, P.O. Box 14155-6455, Iran
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Safin DA, Sokolov FD, Zabirov NG, Brusko VV, Krivolapov DB, Litvinov IA, Luckay RC, Cherkasov RA. Studies on cobalt(II) complexes with N-thioacylamido(thio)phosphates: X-ray crystal structure of the Co[PhC(S)NP(S)(OPri)2]2. Polyhedron 2006. [DOI: 10.1016/j.poly.2006.06.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Singh AK, Saxena P, Mehtab S, Panwar A. Cobalt(II)-selective membrane sensor based on a [Me2(13)dieneN4] macrocyclic cobalt complex. Anal Bioanal Chem 2006; 385:1342-6. [PMID: 16794813 DOI: 10.1007/s00216-006-0544-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2006] [Revised: 05/08/2006] [Accepted: 05/11/2006] [Indexed: 11/29/2022]
Abstract
A new poly(vinyl chloride)-based membrane was fabricated with the cobalt(II) complex of 2,4-dimethyl-1,5,8,11-tetraazacyclotrideca-1,4-diene [Me2(13)dieneN4] as an ion carrier. The membrane composition was Co2+ complex/PVC/NaTPB/DBP 15:50:15:20 (w/w). The sensor exhibited a Nernstian response for Co2+ ions over a wide concentration range (7.94x10(-6)-1.0x10(-1) M) at pH 2.5-7.0, a response time of 10 s, and it could be used for 3 months without any significant divergence in potential. The proposed membrane sensor exhibited good selectivity for Co2+ over a wide variety of other metal ions and in mixtures containing up to 25% (v/v) non-aqueous content. The sensor was successfully used as an indicator electrode in the potentiometric titration of Co2+ with EDTA and the direct determination of Co2+ in real samples.
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Affiliation(s)
- Ashok Kumar Singh
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee, 247 667, India.
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Sokolov FD, Safin DA, Zabirov NG, Brusko VV, Khairutdinov BI, Krivolapov DB, Litvinov IA. Coordination Mode of the Zinc(II) and Cadmium(II) Cations withN-(Diisopropoxyphosphoryl)thiobenzamide. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200501005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gupta VK, Singh AK, Mehtab S, Gupta B. A cobalt(II)-selective PVC membrane based on a Schiff base complex of N,N′-bis(salicylidene)-3,4-diaminotoluene. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2006.02.038] [Citation(s) in RCA: 309] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yaftian MR, Rayati S, Emadi D, Matt D. A Coated Wire-type Lead(II) Ion-Selective Electrode Based on a Phosphorylated Calix[4]arene Derivative. ANAL SCI 2006; 22:1075-8. [PMID: 16896245 DOI: 10.2116/analsci.22.1075] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The preparation of a lead-selective electrode based on 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrakis-(diphenylphosphinoylmethoxy)calix[4]arene (1) as an ionophore is reported. The plasticized PVC membrane containing 30% PVC, 57% ortho-nitrophenyloctylether (NPOE), 4% sodium tetraphenylborate (NaTPB) and 9% ionophore 1 was directly coated on a graphite electrode. It exhibits a nearly Nernstian slope of 28.0 +/- 0.2 mV decade(-1) over a concentration range of 1 x 10(-5) - 1 x 10(-2) mol dm(-3) with a detection limit of 1.4 x 10(-6) mol dm(-3). The response time of the electrode was found to be ca. 17 s. The potential of the sensor was independent of the pH variation in the range 3.5 - 5.0. The selectivity of the electrode performance towards lead ions over Th4+, La3+, Sm3+, Dy3+, Y3+, Ca2+, Sr2+, Cd2+, Mn2+, Zn2+, Ni2+, Co2+, NH4+ Ag+, Li+, Na+ and K+ ions was investigated. The prepared electrode was used successfully as an indicator electrode for a potentiometric titration of a lead solution using a standard solution of EDTA. The applicability of the sensor for Pb2+ measurements in various synthetic water samples spiked with lead nitrate was also checked.
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Sokolov FD, Safin DA, Zabirov NG, Zotov PV, Cherkasov RA. Specific Features of the Structure of Chelate Complexes of N-Thiocarbamoylamidophosphates with Zn(II) and Cd(II) Cations. RUSS J GEN CHEM+ 2005. [DOI: 10.1007/s11176-006-0014-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Filippo GD, Demartin F, Garau A, Lippolis V, Yari A, Shokrollahi A, Shamsipur M. Complexes of Ag+ with mixed donor phenanthroline-containing macrocycles: spectrofluorimetric, spectrophotometric, conductometric and potentiometric studies. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.09.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ganjali MR, Mizani F, Emami M, Darjezini M, Darvich MR, Yousefi M. Synthesis of a New Oxime and Its Application to the Construction of a Highly Selective and Sensitive Co(II) PVC-Based Membrane Sensor. ANAL SCI 2004; 20:531-5. [PMID: 15068300 DOI: 10.2116/analsci.20.531] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A cobalt(II) ion-selective membrane sensor has been fabricated from a poly vinyl chloride (PVC) matrix membrane containing a new oxime compound (oxime of 1-(2-oxocyclohexyl)-1,2-cyclohexanediol, OXCCD) as a neutral carrier, sodium tetraphenyl borate (NaTPB) as an anionic excluder and o-nitrophenyloctylether (o-NPOE) as a plasticizing solvent mediator. The membrane sensor exhibits a linear potential response in the concentration range of 1.0 x 10(-1) - 1.0 x 10(-6) M of Co2+. The electrode displays a Nernstian slope of 29.8 mV decade(-1) in the pH range of 3.5 - 8.0. The sensor also exhibits a fast response time of < 25 s. The detection limit of the proposed sensor is 9.0 x 10(-7) M (approximately 40 ng/ml), and it can be used over a period of two months. The selectivity of the sensor with respect to other cations (alkali, alkaline earth, transition and heavy metal ions) is excellent. The practical utility of the sensor has been demonstrated by using it as an indicator electrode in the potentiometric titration of Co2+ with EDTA and for the direct determination of Co(II) in wastewater of the electroplating industry.
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Ganjali MR, Daftari A, Faal-Rastegar M, Moghimi A. Novel potentiometric sensor for monitoring beryllium based on naphto-9-crown-3. ANAL SCI 2003; 19:353-6. [PMID: 12675338 DOI: 10.2116/analsci.19.353] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A novel poly(vinyl chloride) (PVC) membrane electrode based on naphto-9-crown-3 was prepared and tested for the selective detection of beryllium ions. A suitable lipophilicity of the carrier and appropriate coordination ability were found to be essential for designing an electrode with good response characteristics. A PVC membrane with 9% naphtho-9-crown-3 carrier, 58% o-NPOE plasticizer, 3% tetraphenylborate anionic excluder and 30% poly(vinyl chloride) satisfied these requirements. The proposed sensor displayed a linear response to beryllium over a wide concentration range of 1.0 x 10(-1)-8.0 x 10(-6) M with a Nernstian slope of 29.5 mV per decade. The electrode showed very short response time (<15 s) and could be used in the pH range 3.5-9.0. The selectivity coefficient for alkali, alkaline earth, transition and heavy metal ions was smaller than 4.0 x 10(-4). The sensor was successfully used as an indicator electrode in the potentiometric titration of Be2+ with EDTA. The proposed Be(II) sensor was also used for the determination of Be2+ ions in binary mixtures.
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Ganjali MR, Golmohammadi M, Yousefi M, Norouzi P, Salavati-Niasari M, Javanbakht M. Novel PVC-based copper(II) membrane sensor based on 2-(1'-(4'-(1''-hydroxy-2''-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol. ANAL SCI 2003; 19:223-7. [PMID: 12608749 DOI: 10.2116/analsci.19.223] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A copper(II) ion-selective PVC membrane sensor based on 2-(1'-(4'-(1''-hydroxy-2''-naphthyl)methyleneamino)butyl iminomethyl)-1-naphthol (BHNB) as a novel Schiff base containing a sensing material has been successfully developed. The sensor exhibits a good linear response of 29 mV per decade within the concentration range of 10(-1)-10(-6) M of Cu2+. The sensor shows good selectivity for copper(II) ion in comparison with alkali, alkaline earth, transition and heavy metal ions. The BHNB-based sensor is suitable for use with aqueous solutions of pH 3.5-7.0 and displays minimal interference by Sr(II), Cd(II), Hg(II), Zn(II) and Pb(II), which are known to interfere with other previously suggested electrodes. The proposed membrane electrode was used as a sensor for determining the Cu(II) content in black tea samples. It was also applied as an indicator electrode in the potentiometric titration of Cu2+ ions with EDTA.
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Ganjali MR, Naji L, Poursaberi T, Shamsipur M, Haghgoo S. Ytterbium(III)-selective membrane electrode based on cefixime. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(02)01226-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Shamsipur M, Javanbakht M, Lippolis V, Garau A, Filippo GD, Ganjali MR, Yari A. Novel Ag+ ion-selective electrodes based on two new mixed azathioether crowns containing a 1,10-phenanthroline sub-unit. Anal Chim Acta 2002. [DOI: 10.1016/s0003-2670(02)00374-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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