Iodide-selective carbon paste electrodes based on recently synthesized Schiff base complexes of Fe(III)

Shamsipur, Mojtaba; Soleymanpour, Ahmad; Akhond, Morteza; Sharghi, Hashem; Naseri, Mohammad Ali

doi:10.1016/s0003-2670(01)01380-0

Cited by 62 publications

(18 citation statements)

References 34 publications

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“…In Table 2, the analytical performance and selectivity coefficients for diverse anions of the proposed electrode are compared with the corresponding values previously reported for iodide ion-selective membrane electrodes. 20,22,[25][26][27]33,34,44,45 The data given in Table 2 indicate that, the selectivity coefficients, linear range, response time, pH range and slope of calibration graphs somewhat similar, in some case, or even superior, in most cases, to the sensors prepared previously. Therefore, on the basis of these data, we may conclude that the membrane sensor, proposed in this work is among the most selective and sensitive electrodes reported thus far for iodide ion.…”

Section: Interference Studiesmentioning

confidence: 91%

Iodide-selective membrane electrode based on salophen complex of cobalt (III)

Zare¹,

Memarzadeh²,

Gorji³

et al. 2005

J. Braz. Chem. Soc.

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Neste trabalho foi preparado um eletrodo altamente seletivo de membrana de PVC com o complexo cobalto-salofen. O sensor mostra uma seqüência seletiva anti-Hofmeister, com preferência por íons iodeto sobre vários anions comuns. O eletrodo apresentou uma dinâmica linear na faixa de 5,0×10-7 a 1,0×10 -1 mol L -1 , com uma inclinação Nernstiana de -58,9 mV com um limite de detecção de 3,0×10-7 mol L -1 . A região de pH de trabalho do sensor é de 3,1 a 9,8. A leitura rápida é de 15 s, e tem uma vida útil de 2 meses. Os coeficientes de seletividade para o eletrodo proposto foram melhorados para alguns interferentes, se comparado com os eletrodos de membrana de iodeto disponíveis. O eletrodo proposto foi aplicado com sucesso na determinação direta de iodeto em sal comestível e como eletrodo indicador na titulação potenciométrica de I -contra Ag + .A highly selective PVC membrane electrode based on a cobalt-salophen complex was prepared. The sensor displays an anti-Hofmeister selectivity sequence with a preference for iodide ion over many common anions. The electrode has a linear dynamic range between 5.0×10 -7 to 1.0×10 -1 mol L -1 , with a Nernstian slope of -58.9 mV decade -1 and a detection limit of 3.0×10 -7 mol L -1 . The working pH range of the sensor is 3.1-9.8. It exhibits of a fast as 15 s and has a lifetime of about 2 months. The selectivity coefficients for the proposed electrode were improved for some interferences, when compared with those of available iodide membrane electrode. The proposed electrode was successfully applied for the direct determination of iodide in edible salt and as an indicator electrode in potentiometric titration of I -against Ag + .

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Section: Interference Studiesmentioning

confidence: 91%

Iodide-selective membrane electrode based on salophen complex of cobalt (III)

Zare¹,

Memarzadeh²,

Gorji³

et al. 2005

J. Braz. Chem. Soc.

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“…İyonofor I ve II ile hazırlanan E4 ve E9 iyodür-seçici CPE'lerin pH 4,0'da çalışma aralıkları ve eğimleri sırasıyla 1,0×10 -5 -1,0×10 -1 M; 1,0×10 -6 M -1,0×10 -1 M ve 43,2±0,6; 43,8±0,6 gözlenebilme sınırları ise kalibrasyon eğrilerinin doğrusal kısımlarının kesiştirilmesiyle (Şekil 4), sırasıyla 3,5×10 -6 M (E4) ve 3,7×10 -7 M (E9) olarak tespit edildi (Tablo 1). Önerilen elektrotlarla elde edilen sonuçlar, Tablo 2'de verilen iyonofor olarak farklı metal komplekslerinin kullanıldığı diğer iyodür-seçici CPE'lerle karşılaştırıldığında, bu elektrotların çalışma aralığı ve alt tayin sınırı açısından literatürdeki elektrotlarla yarışabilir nitelikte olduğu belirlendi [34,40,41,44]. Ancak, 2015'de Mortazavi ve arkadaşlarının yaptığı çalışmada hazırlanan iyodür-seçici CPE'lerin eğimleri ve çalışma aralıklarının tabloda yer alan diğer tüm CPE'lerden daha üstün olduğu görülmektedir.…”

Section: Elektrotların çAlışma Aralığının Eğiminin Ve Iyodürün Elektunclassified

“…Literatürdeki benzer iyodür-seçici CPE'lerle karşılaştırıldığında, bu elektrotların, cevap süresi açısından, literatürde rapor edilen benzer elektrotlardan çok daha iyi olduğu görüldü [29,34,40,41,44]. Geliştirilen elektrotların ömrünü belirlemek amacıyla, pH 4,0'da belli zaman aralıklarıyla çizilen kalibrasyon eğrilerinin eğimlerindeki değişim kaydedildi.…”

Section: Cevap Süresi Ve öMrüunclassified

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Paladyum Komplekslerine Dayalı İyodür-Seçici Karbon Pasta Elektrot Hazırlanması

Özel¹,

Muratoğlu²,

Ertürün³

2017

SDÜ Fen Bil Enst Der

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Anahtar KelimelerKarbon pasta elektrot, İyodür-seçici elektrot, Potansiyometri, Paladyum kompleksleri Özet: Dibromo[1,1′-bis(difenilfosfin)ferrosen] paladyum(II) (iyonofor I) ve dikloro[1,1′-bis(difenilfosfin)ferrosen] paladyum(II) (iyonofor II) olarak adlandırılan paladyum komplekslerinin kullanıldığı yeni iyodür-seçici karbon pasta elektrotlar hazırlandı. İyonofor I ve II kullanılarak optimum karbon pasta bileşimiyle hazırlanan elektrotların pH 4,0'da sırasıyla −43,2 ± 0,6 mV/pI ve −43,8 ± 0,6 mV/pI eğimle, 3,5×10 −6 M ve 3,7×10 −7 M gözlenebilme sınırıyla, 1,0×10 −5 − 1,0×10 −1 M ve 1,0×10 −6 − 1,0×10 −1 M derişim aralığında doğrusal cevap verdikleri gözlendi. Önerilen elektrotların kısa cevap sürelerine, 3 aylık ömre, iyi bir tekrarlanabilirlik ve üretilebilirliğe sahip oldukları bulundu. Ayrıca, elektrotlar, iyodür içeren ilaç numunelerinde iyodürün potansiyometrik tayini için indikatör elektrot olarak başarılı bir şekilde kullanıldı. Preparation of Iodide-Selective Carbon Paste Electrode Based on Palladium ComplexesKeywords Carbon paste electrode, Iodide-selective electrode, Potentiometry, Palladium complexes Abstract: New carbon paste iodide-selective electrodes based on palladium complexes named as dibromo[1,1′-bis(diphenylphosphino)ferrocene] palladium(II) (ionophore I) and dichloro[1,1′-bis(diphenylphosphino)ferrocene] palladium(II) (ionophore II) were developed. The electrodes, prepared with optimum carbon paste composition by using ionophore I and II exhibited linear response with slopes of −43.2 ± 0.6 and −43.8 ± 0.6 mV/pI, detection limits of 3.5×10 −6 M and 2.9×10 −6 M at pH 4.0 over the concentration range of 1.0×10 −5 − 1.0×10 −1 M and 1.0×10 −6 − 1.0 × 10 −1 M, respectively. The proposed electrodes were found to have short response times, lifetime of three months, good reproducibility and repeatability. Moreover, the electrodes were successfully used as an indicator electrode for the potentiometric determination of iodide in an iodide containing drug sample.

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“…6,7 Therefore, considering these results, a wide variety of polymeric membranes based on metalloporphyrins or other ionophores have been developed for iodide, as described in the literature. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] To the best of our knowledge, only one iodide-selective membrane electrode based on the Mn(III)-porphyrin derivative supported in polystyrene pyridine copolymer (MnP-PSP4) has been reported until now. 17 We recently used tetrachlorophenylporphyrinato Mn(III) as a new ionophore in constructing of a triiodide PVC membrane electrode, 22 and also reported on a novel class of triiodide membrane electrodes using ion pairs of imidazole antifungal drugs (ketoconazole and clotrimazole) with triiodide as suitable carriers.…”

Section: Introductionmentioning

confidence: 99%

[Tetrakis(4-N,N-dimethylaminobenzene)porphyrinato]-manganese(III) Acetate as a Novel Carrier for a Selective Iodide PVC Membrane Electrode

et al. 2004

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Ion-selective electrodes are now widely used for the determination of specific ions in solution and have found widespread applications in analytical chemistry. 1 In recent years, the study of anti-Hofmeister sensing materials with high selectivity for given anions is an expanding domain in chemical sensors.It is well-known that the use of methalloporphyrins as ionophores in polymeric membrane electrodes can induce potentiometric anion selectivity patterns that differ significantly from the classical Hofmeister pattern. The observed selectivity for metalloporphyrins is not governed by anion lipophilicity, as in the case of a dissociated ion-exchanger, but by specific chemical interactions between the metalloporphyrins in the membrane and the anions in the sample solution, such as complex formation or coordination. [2][3][4][5][6][7] Moreover, membranes constructed based on metalloporphyrins in different matrixes such as PVC, silicon rubber or polyurethane, showed different selectivity toward anions.1 Meyerhoff et al. illustrated that not only the porphyrin structure, but also the nature of the axial linked anion play an important role in the potentiometric selectivity. 6,7 Therefore, considering these results, a wide variety of polymeric membranes based on metalloporphyrins or other ionophores have been developed for iodide, as described in the literature. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] To the best of our knowledge, only one iodide-selective membrane electrode based on the Mn(III)-porphyrin derivative supported in polystyrene pyridine copolymer (MnP-PSP4) has been reported until now. 17 We recently used tetrachlorophenylporphyrinato Mn(III) as a new ionophore in constructing of a triiodide PVC membrane electrode, 22 and also reported on a novel class of triiodide membrane electrodes using ion pairs of imidazole antifungal drugs (ketoconazole and clotrimazole) with triiodide as suitable carriers. 23,24 Due to the vital importance of iodide in biological fluids and drug preparations, on one hand, and also the develoment of new simple methods in the determination of iodide at low concentrations, on the other hand, in the present work we reported on a new highly selective PVC membrane electrode based on recently synthesized [5,10,15,20-tetrakis(4-dimethylaminobenzene)porphyrinato]manganese(III) acetate (MnTDPAc) (Fig. 1) as an ionophore. The proposed electrode is the first attempt to construct an iodide membrane electrode based on Mn(III)-porphyrin derivatives in a PVC matrix. Applications of the proposed membrane electrode as an indicator electrode in the potentiometric titration of iodide ions, pharmaceutical preparations and in the direct potentiometric determination of iodide in seawater samples were investigated. [5,10,15,porphyrinato]Mn(III) acetate (MnTDPAc) was applied as an ionophore for an iodide-selective PVC membrane electrode. The influences of the membrane composition, pH of the test solution and foreign ions on the electrode performance were investigated. The sensor exhibited n...

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Iodide-selective carbon paste electrodes based on recently synthesized Schiff base complexes of Fe(III)

Cited by 62 publications

References 34 publications

Iodide-selective membrane electrode based on salophen complex of cobalt (III)

Iodide-selective membrane electrode based on salophen complex of cobalt (III)

Paladyum Komplekslerine Dayalı İyodür-Seçici Karbon Pasta Elektrot Hazırlanması

[Tetrakis(4-N,N-dimethylaminobenzene)porphyrinato]-manganese(III) Acetate as a Novel Carrier for a Selective Iodide PVC Membrane Electrode

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