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Özbek O, Ölcenoglu A. The use of bis–thiadiazole and bis–oxadiazol derivatives as ionophores: A novel copper(II)–selective potentiometric electrodes. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Topcu C, Caglar B, Guner EK, Coldur F, Caglar S, Yıldırım Ö, Volkan Özdokur K, Cubuk O. Novel Copper(II)-Selective Potentiometric Sensor Based on a Folic Acid-Functionalized Carbon Nanotube Material. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1617300] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Cihan Topcu
- Department of Biomedical Engineering, Faculty of Engineering, Samsun University, Samsun, Turkey
| | - Bulent Caglar
- Department of Chemistry, Faculty of Arts and Sciences, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Eda Keles Guner
- Department of Civil Defence and Firefighting, Uzumlu Vocational School, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Fatih Coldur
- Department of Chemistry, Faculty of Arts and Sciences, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Sema Caglar
- Department of Chemistry, Faculty of Arts and Sciences, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Özden Yıldırım
- Department of Chemistry, Institute of Science and Technology, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Kemal Volkan Özdokur
- Department of Chemistry, Faculty of Arts and Sciences, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Osman Cubuk
- Department of Chemistry, Faculty of Arts and Sciences, Erzincan Binali Yıldırım University, Erzincan, Turkey
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Oiye ÉN, Ribeiro MFM, Katayama JMT, Tadini MC, Balbino MA, Eleotério IC, Magalhães J, Castro AS, Silva RSM, da Cruz Júnior JW, Dockal ER, de Oliveira MF. Electrochemical Sensors Containing Schiff Bases and their Transition Metal Complexes to Detect Analytes of Forensic, Pharmaceutical and Environmental Interest. A Review. Crit Rev Anal Chem 2019; 49:488-509. [PMID: 30767567 DOI: 10.1080/10408347.2018.1561242] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Schiff bases and their transition metal complexes are inexpensive and easy to synthesize. These compounds display several structural and electronic features that allow their application in numerous research fields. Over the last three decades, electroanalytical scientists of various areas have developed electrochemical sensors from many compounds. The present review discusses the applicability of Schiff bases, their transition metal complexes and new materials containing these compounds as electrode modifiers in sensors to detect analytes of forensic, pharmaceutical and environmental interest. In forensic sciences, Schiff bases are mainly used to analyze illicit drugs: chemical reactions involving Schiff bases can help to elucidate illicit drug production and to determine analytes in seized samples. In the environmental area, given that most methodologies provide Limit of Detection (LOD) values below the values recommended by regulatory agencies, Schiff bases constitute a promising strategy. As for pharmaceutical applications, Schiff bases represent an approach for analysis of complex biological samples containing low levels of the target analytes in the presence of a large quantity of interfering compounds. This review will show that new highly specific materials can be synthesized based on Schiff bases and applied in the pharmaceutical industry, toxicological studies, electrocatalysis and biosensors. Most literature papers have reported on Schiff bases combined with carbon paste to give a chemically modified electrode that is easy and inexpensive to produce and which displays specific and selective sensing capacity for different applications.
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Affiliation(s)
- Érica Naomi Oiye
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Maria Fernanda Muzetti Ribeiro
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Juliana Midori Toia Katayama
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Maraine Catarina Tadini
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Marco Antonio Balbino
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Izabel Cristina Eleotério
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Juliana Magalhães
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Alex Soares Castro
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - Ricardo Soares Mota Silva
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
| | - José Wilmo da Cruz Júnior
- Departamento de Ciências Exatas e Educação, Universidade Federal de Santa Catarina , Blumenau , Santa Catarina , Brasil
| | - Edward Ralph Dockal
- Departamento de Química - Centro de Ciências Exatas e de Tecnologia, Universidade Federal de São Carlos , São Carlos , São Paulo , Brasil
| | - Marcelo Firmino de Oliveira
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo , Ribeirão Preto , São Paulo , Brasil
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Kardaş F. Facile Synthesis and Characterization of 5-[(3-Methylthiophene-2-yl-methyleneamino)]-2-mercaptobenzimidazole and Its Potentiometric Sensor Application in a Polyvinyl Chloride Membrane for the Determination of Copper(II). ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1543700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Faruk Kardaş
- Department of Mathematics and Science Education Faculty of Education, Erzincan Binali Yildirim University, Erzincan, Turkey
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6
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Torawane P, Keshav K, Kumawat MK, Srivastava R, Anand T, Sahoo S, Borse A, Kuwar A. A novel terephthalaldehyde based turn-on fluorescent chemosensor for Cu 2+ and its application in imaging of living cells. Photochem Photobiol Sci 2018; 16:1464-1470. [PMID: 28799606 DOI: 10.1039/c7pp00182g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A new terephthaldehyde-based chemosensor 1 bearing an aminophenol recognition unit has been synthesized and applied to the fluorescent sensing of metal ions. Molecular system 1 acts as a highly selective and sensitive fluorescence turn-on sensor for Cu2+. The sensing mechanism has been explored. It is proposed that Cu2+ binds with the imine and hydroxyl moiety of 1 in 1 : 2 binding stoichiometry, thereby enhancing the fluorescence at 386 nm. The detection limit and association constant (Ka) of 1 with Cu2+ were found to be 0.62 μM and 6.67 × 104 M-1, respectively. Chemosensor 1 has shown excellent specificity towards Cu2+ and has been successfully applied to the determination of Cu2+ in live L929 cells.
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Affiliation(s)
- Pritam Torawane
- School of Chemical Sciences, North Maharashtra University, Jalgaon-425001, Maharashtra, India.
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Youssef AFA, Issa YM, Shehab OR, Sherief H. Determination of Microgram Amounts of Copper in Real Samples Using New Modified Carbon Paste Electrode. INT J ELECTROCHEM SC 2015; 10:4752-4769. [DOI: 10.1016/s1452-3981(23)06662-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Ahmadzadeh S, Rezayi M, Kassim A, Aghasi M. Cesium selective polymeric membrane sensor based on p-isopropylcalix[6]arene and its application in environmental samples. RSC Adv 2015. [DOI: 10.1039/c5ra02799c] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present work deals with developing a highly selective membrane electrode based on p-isopropylcalix[6]arene for accurate determination of trace amounts of cesium cations.
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Affiliation(s)
- Saeid Ahmadzadeh
- Pharmaceutics Research Center
- Institute of Neuropharmacology
- Kerman University of Medical Sciences
- Kerman
- Iran
| | - Majid Rezayi
- UM Center for Ionic Liquids
- Chemistry Department
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur
| | - Anuar Kassim
- Department of Chemistry
- Faculty of Science
- Universiti Putra Malaysia
- Selangor
- Malaysia
| | - Majid Aghasi
- Herbal and Traditional Medicine Research Centre
- Kerman University of Medical Sciences
- Kerman
- Iran
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Al Zoubi W, Al Mohanna N. Membrane sensors based on Schiff bases as chelating ionophores--a review. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 132:854-870. [PMID: 24947440 DOI: 10.1016/j.saa.2014.04.176] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/24/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
The development of chemical sensors has received widespread attention during the past two decades because of their extensive use in environmental monitoring and clinical analysis via rapid, accurate, reproducible, and low-cost methods. Chemically modified CPEs have frequently been employed as potentiometric sensors in trace analysis for metal ions, organic pollutants and biological substances. Most of these electrodes are operated via the ion-exchange process of the active component incorporated into the carbon paste matrix. This review article concentrates on such achievements in the context of the general development across the field. An overview of potentiometric sensors that are capable of detecting metal ions in environmental samples is presented and discussed. A survey on important advances in potentiometric sensors with regard to high selectivity, lower detection limit, and fast response time is presented in this review article.
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Affiliation(s)
- Wail Al Zoubi
- Department of Chemistry, Faculty of Science, University of Damascus, Syria.
| | - NaDeem Al Mohanna
- Department of Chemistry, Faculty of Science, University of Damascus, Syria
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Vlascici D, Popa I, Chiriac VA, Fagadar-Cosma G, Popovici H, Fagadar-Cosma E. Potentiometric detection and removal of copper using porphyrins. Chem Cent J 2013; 7:111. [PMID: 23829792 PMCID: PMC3708750 DOI: 10.1186/1752-153x-7-111] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 07/02/2013] [Indexed: 11/17/2022] Open
Abstract
Background Copper is an essential trace element with a great importance in industry, environment and biological systems. The great advantage of ion-selective sensors in comparison with other proposed techniques is that they are measuring the free metal ion activity which is responsible for their toxicity. Porphyrins are known to be among the best ionophores in formulation of ion-selective sensors. Results A symmetrically substituted meso-porphyrin, namely: 5,10,15,20-tetrakis(4-allyloxyphenyl)porphyrin (TAPP) was used in the construction of a new copper selective-sensor and was also tested for the removal of copper from waste waters. The potentiometric response characteristics (slope and selectivity) of copper-selective electrodes based on TAPP in o-nitrophenyloctylether (o-NPOE), dioctyl phtalate (DOP) and dioctyl sebacate (DOS) plasticized with poly(vinyl chloride) membranes are compared. Conclusions The best results were obtained for the membrane plasticized with DOP. The sensor has linear response in the range 1x10-7 – 1x10-1 M with 28.4 ± 0.4 mV/decade near-Nernstian slope towards copper ions and presents good selectivity. Due to its chelating nature, the same porphyrin was also tested for the retention of copper from synthetic copper samples, showing a maximum adsorption capacity of 280 mg/g.
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Affiliation(s)
- Dana Vlascici
- Institute of Chemistry Timisoara of Romanian Academy, M, Viteazul Ave, 24, Timisoara, 300223, Romania.
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Ocaña C, Malashikhina N, del Valle M, Pavlov V. Label-free selective impedimetric detection of Cu2+ ions using catalytic DNA. Analyst 2013; 138:1995-9. [DOI: 10.1039/c3an36778a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Soleymanpour A, Shafaatian B, Kor K, Hasaninejad AR. Coated wire lead(II)-selective electrode based on a Schiff base ionophore for low concentration measurements. MONATSHEFTE FUR CHEMIE 2011. [DOI: 10.1007/s00706-011-0634-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ansari R, Delavar AF, Aliakbar A, Mohammad-khah A. Solid-state Cu (II) ion-selective electrode based on polyaniline-conducting polymer film doped with copper carmoisine dye complex. J Solid State Electrochem 2011. [DOI: 10.1007/s10008-011-1436-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kopylovich MN, Mahmudov KT, Pombeiro AJL. Poly(vinyl) chloride membrane copper-selective electrode based on 1-phenyl-2-(2-hydroxyphenylhydrazo)butane-1,3-dione. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:1154-1162. [PMID: 21177026 DOI: 10.1016/j.jhazmat.2010.11.119] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 11/25/2010] [Accepted: 11/28/2010] [Indexed: 05/30/2023]
Abstract
1-Phenyl-2-(2-hydroxyphenylhydrazo)butane-1,3-dione (H(2)L) was used as an effective ionophore for copper-selective poly(vinyl) chloride (PVC) membrane electrodes. Optimization of the composition of the membrane and of the conditions of the analysis was performed, and under the optimized conditions the electrode has a detection limit of 6.30×10(-7) M Cu(II) at pH 4.0 with response time 10s and displays a linear EMF versus log[Cu(2+)] response over the concentration range 2.0×10(-6) to 5.0×10(-3) M Cu(II) with a Nernstian slope of 28.80±0.11 mV/decade over the pH range of 3.0-8.0. The sensor is stable for 9 weeks and exhibits good selectivity with respect to alkali, alkali earth and transition metal ions (e.g. Na(+), K(+), Ba(2+), Ca(2+), Zn(2+), Cd(2+), Co(2+), Mn(2+), Ni(2+), Fe(2+), Al(3+)) in the 3.0-8.0 pH range. It was successfully applied for the direct determination of copper(II) in zinc, aluminum and nickel based alloys, in soils polluted by oil, and as an indicator electrode for potentiometric titration of copper ions with EDTA.
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Affiliation(s)
- Maximilian N Kopylovich
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, TU Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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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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Zamani HA, Rajabzadeh G, Firouz A, Ganjali MR. Determination of copper(II) in wastewater by electroplating samples using a PVC-membrane copper(II)-selective electrode. JOURNAL OF ANALYTICAL CHEMISTRY 2007. [DOI: 10.1134/s1061934807110135] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Singh AK, Mehtab S, Jain AK. Selective electrochemical sensor for copper (II) ion based on chelating ionophores. Anal Chim Acta 2006; 575:25-31. [PMID: 17723567 DOI: 10.1016/j.aca.2006.05.076] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2006] [Revised: 05/17/2006] [Accepted: 05/22/2006] [Indexed: 11/24/2022]
Abstract
Plasticized membranes using 3-(2-pyridinyl)-2H-pyrido[1,2,-a]-1,3,5-triazine-2,4(3H)-dithione (L1) and acetoacetanilide (L2) have been prepared and explored as Cu2+-selective sensors. Effect of various plasticizers, viz. chloronaphthalene (CN), benzyl acetate (BA), o-nitrophenyloctyl ether (o-NPOE), and anion excluders, sodium tetraphenylborate (NaTPB) and oleic acid (OA) was studied in detail and improved performance was observed at several instances. Optimum performance was observed with dithione derivative (L1) having a membrane composition of L1 (5):PVC (120):o-NPOE (240):OA (10). The sensor works satisfactorily in the concentration range 5.0 x 10(-8) to 1.0 x 10(-2) M (detection limit 4.0 x 10(-8) M) with a Nernstian slope of 29.5 mV decade(-1) of activity. Wide pH range (3.0-9.5), fast response time (12s), non-aqueous tolerance (up to 20%) and adequate shelf life (4 months) indicate the vital utility of the proposed sensor. The potentiometric selectivity coefficient values as determined by match potential method (MPM) indicate good response for Cu2+ in presence of interfering ions. The proposed electrode comparatively shows good selectivity with respect to alkali, alkaline earth, transition and some rare earth metals ions. The electrode was used for the determination of copper in different milk powder, water samples and as indicator electrode in potentiometric titration of copper ion with EDTA.
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Affiliation(s)
- Ashok Kumar Singh
- Department of Chemistry, Indian Institute of Technology at Roorkee, Roorkee 247667, India.
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Ganjali MR, Norouzi P, Faridbod F, Ghorbani M, Adib M. Highly selective and sensitive chromium(III) membrane sensors based on a new tridentate Schiff's base. Anal Chim Acta 2006. [DOI: 10.1016/j.aca.2006.03.105] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zamani H, Rajabzadeh G, Ganjali M, Khatami S. Highly Selective and Sensitive Copper(II) Membrane Sensors Based on 6-Methyl-4-(1-phenylmethylidene)amino-3-thioxo-1,2,4-triazin-5-one as a New Neutral Ionophore. ELECTROANAL 2005. [DOI: 10.1002/elan.200503356] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ganjali MR, Akbar V, Ghorbani M, Norouzi P, Ahmadi A. Fluoride determination in some mouth wash preparations by a novel La(III) graphite coated membrane sensor based on amitraz. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.10.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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