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Paut A, Prkić A, Mitar I, Guć L, Marciuš M, Vrankić M, Krehula S, Tomaško L. The New Ion-Selective Electrodes Developed for Ferric Cations Determination, Modified with Synthesized Al and Fe-Based Nanoparticles. SENSORS 2021; 22:s22010297. [PMID: 35009839 PMCID: PMC8749730 DOI: 10.3390/s22010297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/21/2021] [Accepted: 12/28/2021] [Indexed: 12/21/2022]
Abstract
The solid-state ion-selective electrodes presented here are based on the FePO4:Ag2S:polytetrafluoroethylene (PTFE) = 1:1:2 with an addition of (0.25-1)% microwave-synthesized hematite (α-Fe2O3), magnetite (Fe3O4), boehmite [γ-AlO(OH)], and alumina (Al2O3) nanoparticles (NPs) in order to establish ideal membrane composition for iron(III) cations determination. Synthesized NPs are characterized with Fourier-Transform Infrared (FTIR) spectroscopy, Powder X-Ray Diffraction (PXRD), and Scanning Electron Microscopy (SEM) with Energy Dispersive Spectroscopy (EDS). The iron oxides NPs, more specifically, magnetite and hematite, showed a more positive effect on the sensing properties than boehmite and alumina NPs. The hematite NPs had the most significant effect on the linear range for the determination of ferric cations. The membrane containing 0.25% hematite NPs showed a slope of -19.75 mV per decade in the linear range from 1.2∙10-6 to 10-2 mol L-1, with a correlation factor of 0.9925. The recoveries for the determination of ferric cations in standard solutions were 99.4, 106.7, 93.6, and 101.1% for different concentrations.
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Affiliation(s)
- Andrea Paut
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia; (A.P.); (L.G.); (L.T.)
| | - Ante Prkić
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia; (A.P.); (L.G.); (L.T.)
- Correspondence: ; Tel.: +385-21-329-462
| | - Ivana Mitar
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia;
| | - Lucija Guć
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia; (A.P.); (L.G.); (L.T.)
| | - Marijan Marciuš
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.M.); (S.K.)
| | - Martina Vrankić
- Division of Materials Physics and Center of Excellence for Advanced Materials and Sensing Devices, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia;
| | - Stjepko Krehula
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.M.); (S.K.)
| | - Lara Tomaško
- Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia; (A.P.); (L.G.); (L.T.)
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Paut A, Prkić A, Mitar I, Bošković P, Jozić D, Jakić M, Vukušić T. Potentiometric Response of Solid-State Sensors Based on Ferric Phosphate for Iron(III) Determination. SENSORS 2021; 21:s21051612. [PMID: 33668940 PMCID: PMC7956673 DOI: 10.3390/s21051612] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/20/2021] [Accepted: 02/21/2021] [Indexed: 12/23/2022]
Abstract
A novel ion-selective electrode with membranes based on iron(III) phosphate and silver sulfide integrated into a completely new electrode body design has been developed for the determination of iron(III) cations. The best response characteristics with linear potential change were found in the iron(III) concentration range from 3.97 × 10−5 to 10−2 mol L−1. The detection limit was found to be 2.41 × 10−5 mol L−1 with a slope of −20.53 ± 0.63 and regression coefficient of 0.9925, while the quantification limit was 3.97 × 10−5 M. The potential change per concentration decade ranged from −13.59 ± 0.54 to −20.53 ± 1.56 for Electrode Body 1 (EB1) and from −17.28 ± 1.04 to −24 ± 1.87 for Electrode Body 2 (EB2), which is presented for the first time in this work. The prepared electrode has a long lifetime and the ability to detect changes in the concentration of iron cations within 20 s. Membrane M1 showed high recoveries in the determination of iron cations in iron(III) standard solutions (98.2–101.2%) as well as in two different pharmaceuticals (98.6–106.5%). This proves that this type of sensor is applicable in the determination of ferric cations in unknown samples, and the fact that all sensor parts are completely manufactured in our laboratory proves the simplicity of the method.
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Affiliation(s)
- Andrea Paut
- Department of Analytical Chemistry, Faculty of Chemistry and Technology, University of Split, R. Boškovića 35, 21000 Split, Croatia;
| | - Ante Prkić
- Department of Analytical Chemistry, Faculty of Chemistry and Technology, University of Split, R. Boškovića 35, 21000 Split, Croatia;
- Correspondence:
| | - Ivana Mitar
- Department of Chemistry, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (I.M.); (P.B.)
| | - Perica Bošković
- Department of Chemistry, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (I.M.); (P.B.)
| | - Dražan Jozić
- Department of Inorganic Technology, Faculty of Chemistry and Technology, University of Split, R. Boškovića 35, 21000 Split, Croatia;
| | - Miće Jakić
- Department of Organic Technology, Faculty of Chemistry and Technology, University of Split, R. Boškovića 35, 21000 Split, Croatia;
| | - Tina Vukušić
- Faculty of Chemistry and Technology, University of Split, R. Boškovića 35, 21000 Split, Croatia;
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Madhushani C. Haputhanthri, Hasini R. Perera. A Novel Potentiometric Ion Selective Electrode Based on Piperine for the Determination of Fe(III) Ions. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821010032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Özbek O, Isildak Ö, Berkel C. The use of porphyrins in potentiometric sensors as ionophores. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01004-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Zhang Q, Liu XJ, He RC, Guo CB, Zhao WZ, Zeng CC, Yin LP. Development of a Fluorescent-type Sensor Based on Rhodamine B for Fe(III) Determination. CHEM LETT 2018. [DOI: 10.1246/cl.170964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qi Zhang
- College of Life Science, Capital Normal University, Beijing 100048, P. R. China
| | - Xue-Jing Liu
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University Health Science Center, Beijing 100191, P. R. China
| | - Ri-Cai He
- College of Life Science, Capital Normal University, Beijing 100048, P. R. China
| | - Chang-Bin Guo
- College of Life Science, Capital Normal University, Beijing 100048, P. R. China
| | - Wei-Zhong Zhao
- College of Life Science, Capital Normal University, Beijing 100048, P. R. China
| | - Cheng-Chu Zeng
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, P. R. China
| | - Li-Ping Yin
- College of Life Science, Capital Normal University, Beijing 100048, P. R. China
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Role of conformational and electronic effects on various thienylporphyrinic ionophores in the detection of metal ions – A potentiometric investigation. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.08.088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Polyvinyl chloride-based 18-crown-6, dibenzo18-crown-6 and calix-[6]-arene zinc(II)-potentiometric sensors. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2011.09.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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A novel sensor for monitoring of iron(III) ions based on porphyrins. SENSORS 2012; 12:8193-203. [PMID: 22969395 PMCID: PMC3436024 DOI: 10.3390/s120608193] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 05/27/2012] [Accepted: 06/08/2012] [Indexed: 11/17/2022]
Abstract
Three A(3)B porphyrins with mixed carboxy-, phenoxy-, pyridyl-, and dimethoxy-substituent functionalization on the meso-phenyl groups were obtained by multicomponent synthesis, fully characterized and used as ionophores for preparing PVC-based membrane sensors selective to iron(III). The membranes have an ionophore:PVC:plasticizer composition ratio of 1:33:66. Sodium tetraphenylborate was used as additive (20 mol% relative to ionophore). The performance characteristics (linear concentration range, slope and selectivity) of the sensors were investigated. The best results were obtained for the membrane based on 5-(4-carboxyphenyl)-10,15,20-tris(4-phenoxyphenyl)-porphyrin plasticized with bis(2-ethylhexyl)sebacate, in a linear range from 1 × 10(-7)-1 × 10(-1) M with a slope of 21.6 mV/decade. The electrode showed high selectivity with respect to alkaline and heavy metal ions and a response time of 20 s. The influence of pH on the sensor response was studied. The sensor was used for a period of six weeks and the utility has been tested for the quantitative determination of Fe(III) in recovered solutions from spent lithium ion batteries and for the quantitative determination of Fe(III) in tap water samples.
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Bera RK, Sahoo SK, Baral M, Kanungo B. A Novel Iron(III) Selective Membrane Electrode Containing a Tripodal Polycatacholamine as Sensor. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.10.3592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Almeida S, Heitor A, Montenegro M, Sales M. Sulfadiazine-selective determination in aquaculture environment: Selective potentiometric transduction by neutral or charged ionophores. Talanta 2011; 85:1508-16. [DOI: 10.1016/j.talanta.2011.06.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 05/31/2011] [Accepted: 06/11/2011] [Indexed: 11/29/2022]
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Buntem R, Intasiri A, Lueangchaichaweng W. Facile synthesis of silica monolith doped with meso-tetra(p-carboxyphenyl)porphyrin as a novel metal ion sensor. J Colloid Interface Sci 2010; 347:8-14. [DOI: 10.1016/j.jcis.2010.03.035] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2009] [Revised: 03/16/2010] [Accepted: 03/17/2010] [Indexed: 10/19/2022]
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Kamel AH, Almeida SAA, Sales MGF, Moreira FTC. Sulfadiazine-potentiometric sensors for flow and batch determinations of sulfadiazine in drugs and biological fluids. ANAL SCI 2009; 25:365-71. [PMID: 19276592 DOI: 10.2116/analsci.25.365] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
New PVC membrane electrodes for the determination of sulfadiazine (SDZ) are presented. The electrodes are fabricated with conventional and tubular configurations with a graphite-based electrical contact, and no internal reference solution. The selective membranes consist of bis(triphenylphosphoranilidene)ammonium.SDZ (electrode A), tetraoctylammonium bromide (electrode B), or iron(II)-phthalocyanine (FePC) (electrode C) electroactive materials dispersed in a PVC matrix of o-nitrophenyl octyl ether (o-NPOE) plasticizer. The sensors A, B, and C displayed linear responses over the concentration ranges 1.0 x 10(-2) - 1.0 x 10(-5), 1.0 x 10(-2) - 7.5 x 10(-6), and 3.2 x 10(-2) - 7.0 x 10(-6) mol l(-1) (detection limits of 1.09, 2.04 and 0.87 microg ml(-1)) with anionic slopes of -57.3 +/- 0.1, -46.7 +/- 0.5, and -65.1 +/- 0.2 mV decade(-1), respectively. No effect from pH was observed within 4.0 - 5.5, 4.8 - 10, and 4.5 - 8, respectively, and good selectivity was found. The sensors were applied to the analysis of pharmaceuticals and biological fluids in steady state and in flow conditions.
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Affiliation(s)
- Ayman H Kamel
- REQUIMTE, Instituto Superior de Engenharia do Porto, R. Dr. António Bernardino de Almeida 431,4200-072 Porto, 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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Arida HA, Daifullah AA, Omar HA. Homogeneous Solid‐State Titanium Phosphate Potentiometric Sensor and its Application; Sorption of Iron (III) by Modified Chitosan in Two Modes of Operations. ANAL LETT 2007. [DOI: 10.1080/00032710701566610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Pooyamanesh MJ, Zamani HA, Rajabzadeh G, Ganjali MR, Norouzi P. Fe(III) Ion‐Selective Membrane Electrode Based on 4‐Amino‐6‐methyl‐3‐methylmercapto‐1,2,4‐triazin‐5‐one. ANAL LETT 2007. [DOI: 10.1080/00032710701380632] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ekmekci G, Uzun D, Somer G, Kalaycı Ş. A novel iron(III) selective membrane electrode based on benzo-18-crown-6 crown ether and its applications. J Memb Sci 2007. [DOI: 10.1016/j.memsci.2006.10.044] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sales MGF, Tomás JFC, Lavandeira SR. Flow injection potentiometric determination of chlorpromazine. J Pharm Biomed Anal 2006; 41:1280-6. [PMID: 16650709 DOI: 10.1016/j.jpba.2006.03.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2006] [Revised: 03/20/2006] [Accepted: 03/23/2006] [Indexed: 10/24/2022]
Abstract
New chlorpromazine selective electrodes with a tubular arrangement and no internal reference solution are proposed. Selective membranes are of poly(vinyl chloride) (PVC) with the tetraphenylborate.chlorpromazine (TPB.CPZ) ion-exchanger dissolved in o-nitrophenyl octyl ether (oNPOE). Analytical features of the electrodes were evaluated on a single-channel flow assembly having 500 microl injection volumes and flow-rates of 4.5 ml min(-1). For a carrier solution of 3.3 x 10(-3)M in sodium sulphate, Nernstian response was observed over the concentration range 1.0 x 10(-5) to 1.0 x 10(-2)M. Average slopes were about 59 mV decade(-1) and squared correlation coefficients were >0.9984. Slight hiper-Nernstian behaviour was observed in buffer solutions of 4.4 pH; average slopes were of 62.06 mV decade(-1). The electrode displayed a good selectivity for CPZ, with respect to, several foreign inorganic and organic species. The selective electrodes were successfully applied to the analysis of pure solutions and pharmaceutical preparations. Proposed method allows the analysis of 84 samples h(-1), producing wastewaters of low toxicity. The proposed method offers the advantage of simplicity, accuracy, applicability to coloured and turbid samples, and automation feasibility.
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Affiliation(s)
- M Goreti F Sales
- CEQUP, Instituto Superior de Engenharia do Porto, Department of Chemical Engineering, Porto, Portugal.
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Fakhari AR, Khorrami AR, Shamsipur M. Selective uphill Zn2+ transport via a bulk liquid membrane using an azacrown ether carrier. Sep Purif Technol 2006. [DOI: 10.1016/j.seppur.2005.11.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Polymeric Membrane Lanthanum(III)-Selective Electrode Based onN,N′-Adipylbis(5-phenylazo salicylaldehyde hydrazone). ELECTROANAL 2005. [DOI: 10.1002/elan.200503309] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Badawy SS, Issa YM, Mutair AA. PVC membrane ion-selective electrodes for the determination of Hyoscyamine in pure solution and in pharmaceutical preparations under batch and flow modes. J Pharm Biomed Anal 2005; 39:117-24. [PMID: 15935604 DOI: 10.1016/j.jpba.2005.03.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2005] [Revised: 03/29/2005] [Accepted: 03/29/2005] [Indexed: 11/20/2022]
Abstract
New PVC membrane electrodes selective for the determination of hyoscyamine ion (Hy(+)) based on hyoscyamine tetraphenylborate (Hy-TPB) or hyoscyamine phosphotungstate (Hy-PT) ion-exchangers as electroactive materials are described. The electrodes show a linear response for Hy(+) over the concentration range of 1.00 x 10(-5) to 1.26 x 10(-2) mol L(-1) and 1.00 x 10(-4) to 1.00 x 10(-2) mol L(-1) in case of Hy-TPB electrode applying batch and flow injection analysis (FIA), respectively, and 1.00 x 10(-5) to 4.52 x 10(-3) mol L(-1) and 6.31 x 10(-5) to 1.00 x 10(-2) mol L(-1) in case of Hy-PT electrode for batch and FIA, respectively. The lower detection limits are 3.90 x 10(-6) and 4.51 x 10(-6) at 25 degrees C for Hy-TPB and Hy-PT electrodes, respectively. The electrodes posses near Nernstian slopes of 56.5 and 57.8 mV/decade for Hy-TPB and Hy-PT electrodes, respectively, and a fast potential response of < or =20 s which is almost constant over a pH range of 3-10. Selectivity coefficient data for some common inorganic cations, sugars, amino acids and the components, other than hyoscyamine, of the mixed drugs investigated show negligible interference. The electrodes have been applied to the potentiometric determination of hyoscyamine in pure solution and in pharmaceutical preparations under batch and FIA conditions and as end point indicator electrode for the determination of hyoscyanine using potentiometric titration. For the concentrations (1.08 x 10(-5) mol L(-1) to 3.16 x 10(-3) mol L(-1)) an average recovery of 99.95% with relative standard deviation of 0.63% has been achieved. The effect of temperature on the electrodes was also studied.
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Affiliation(s)
- Sayed S Badawy
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
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Shamsipur M, Soleymanpour A, Akhond M, Sharghi H, Sarvari M. Highly Selective Chromium(III) PVC-Membrane Electrodes Based on Some Recently Synthesized Schiff's Bases. ELECTROANAL 2005. [DOI: 10.1002/elan.200403152] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Badawy SS, Youssef AF, Mutair AA. Construction and performance characterization of ion-selective electrodes for potentiometric determination of phenylpropanolamine hydrochloride applying batch and flow injection analysis techniques. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.02.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shamsipur M, Ershad S, Yari A, Sharghi H, Salimi AR. Hydroxy-Thioxanthones as Suitable Neutral lonophores for the Preparation of PVC-Membrane Potentiometric Sensors for Al(III) Ion. ANAL SCI 2004; 20:301-6. [PMID: 15055955 DOI: 10.2116/analsci.20.301] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The complexation of five recently synthesized hydroxy-thioxanthone derivatives with Al3+ ion was studied in a methanol solution spectrophotometrically, and the stepwise formation constants of the resulting 1:1 and 2:1 (ligand-to-metal) complexes were evaluated. The suitability of the thioxanthone derivatives as neutral ionophores for the preparation of a new Al3+ ion-selective PVC-membrane electrode was investigated, and 1-hydroxy-3-methyl-thiocanthone was selected as the best compound for this purpose. The prepared electrode exhibits a Nernstian response for Al3+ ions over a wide concentration range (2.0 x 10(-2) to 2.0 x 10(-6) M), with a limit of detection of 1.0 x 10(-6) M. It has a very fast response time of about 5 s and can be used for at least 3 months without any considerable divergence in the potentials. The proposed membrane sensor revealed very good selectivities for Al3+ over a wide variety of other metal ions, and could be used at a working pH range of 3.4 - 5.0. It was used as an indicator electrode in potentiometric titration of aluminum ions with EDTA, and in the determination of Al3+ in different real samples.
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Fakhari A, Shamsipur M, Ghanbari K. Zn(II)-selective membrane electrode based on tetra(2-aminophenyl) porphyrin. Anal Chim Acta 2002. [DOI: 10.1016/s0003-2670(02)00200-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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