Copper(II)-Selective Membrane Electrode Based on a Recently Synthesized Macrocyclic Diamide

Shamsipur, Mojtaba; Rouhani, Shohre; Ganjali, Mohammad Reza; Eshghi, Hossein; Sharghi, Hashem

doi:10.1006/mchj.1999.1784

Cited by 75 publications

(38 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…44,51 To assess the selectivity of the proposed silver ion-selective electrode over other cations, M n+ , the methods of fixed interference (FIM) 52 and mixed solution (MSM) 53 were employed as described in our previous publications. 12,13,[28][29][30][31]40 The resulting K Ag,M values for the proposed Ag + ion-selective electrode are summarized in Table 1. As seen, in all cases studied, the selectivity coefficients are in the order of 10 −3 and smaller, emphasizing the highly selective behavior of the proposed membrane electrode for Ag + ion over many other monovalent and divalent cations of vastly different soft-hard character.…”

Section: Resultsmentioning

confidence: 99%

A New PVC-Membrane Electrode Based on a Thia-Substituted Macrocyclic Diamide for Selective Potentiometric Determination of Silver Ion

Shamsipur¹,

Kazemi²,

Niknam³

et al. 2002

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

A new PVC-membrane electrode for Ag + ion based on a thia-substituted macrocyclic diamide has been prepared. The electrode exhibited a Nernstian response for Ag + over a wide concentration range (1.7 × 10It has a response time <15 s and can be used for at least 3 months without divergence. The proposed membrane sensor revealed good selectivities for Ag + over a variety of metal ions and can be used in a pH range 3.0-7.5. It has been used successfully for direct determination of Ag + in different real samples and, as an indicator electrode, in the titration of silver ion.

show abstract

Section: Resultsmentioning

confidence: 99%

A New PVC-Membrane Electrode Based on a Thia-Substituted Macrocyclic Diamide for Selective Potentiometric Determination of Silver Ion

Shamsipur¹,

Kazemi²,

Niknam³

et al. 2002

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

show abstract

“…Table 4 compared the selectivity coefficients of the Cu(II) sensor with those of the best previously Cu(II) electrodes reported in the literature by other researchers. 8,[11][12][13][14][15][16][17][18][19][20] As it is obvious, the selectivity coefficients of the electrode for majority of cations, that tested is superior respect with the best previously reported copper sensor.…”

Section: Selectivity Of the Cu(ii) Electrodementioning

confidence: 99%

“…1,5 A wide variety of neutral carriers, including small size thia-substituted crown ethers, 6,7 benzo-substituted macrocyclic diamides, 8 anthraquinone derivatives, 9 acyclic neutral ligands with dithiocarbamate groups, 10,11 and with nitrogen atoms, 12 hydroxamate derivatives, 13 aza-thioether crowns, 14 calix [4]arenas, 15 naphthol derivatives, 16 and Schiff's bases, [17][18][19][20][21][22] have been used as carriers in the construction of copper(II) ion selective membrane electrodes. However, most of these copper sensors have problems such as: (i) narrow working concentration range, (ii) high detection limit and (iii) strong interfering effect of cations as follow Fe 3+ , Co 2+ , Ni 2+ , Hg 2+ , Ag 2+ , Sr 2+ , Na + , Cs + and K + .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 4-amino-6-methyl-1,2,4-triazin-5-one-3-thione and its application in construction of a highly copper(II) ion-selective electrochemical sensor

Zamani¹,

Rajabzadeh²,

Firouz³

et al. 2005

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Um sensor altamente seletivo para Cu(II) usando 4-amino-6-metil-1,2,4-triazina-5-ona-3-tiona (AMTOT) como material seletivo, foi desenvolvido utilizando uma membrana de PVC. O eletrodo exibe um intervalo dinâmico linear entre 1,0×10 -1 e 1,0×10 -6 mol L -1 , com resposta Nernsteniana de 29,3 ± 0,6 mV por década e um limite de detecção de 6,2×10 -7 mol L -1 . A resposta do eletrodo é independente do pH, no intervalo entre 2,5 e 7,0. O sensor possui a vantagem de apresentar um tempo de condicionamento pequeno, uma rápida velocidade de resposta (< 20 s) e especialmente, uma boa seletividade frente a metais pesados e de transição, e a alguns cátions mono, di e trivalentes. O eletrodo pode ser usado por até 9 semanas sem consideráveis divergências de potencial. O eletrodo proposto foi aplicado com sucesso na determinação de cobre em águas de descarte, oriundas de plantas eletroquímicas de cobre e como eletrodo indicador na titulação potenciométrica de íons Ca(II) com EDTA.A highly Cu(II) ion-selective PVC membrane sensor based on 4-Amino-6-methyl-1,2,4-triazin-5-one-3-thione (AMTOT) as an excellent sensing material was developed. The electrode exhibits a linear dynamic range between 1.0×10 -1 and 1.0×10 -6 mol L -1 , with a near Nernstian slope of 29.3 ± 0.6 mV per decade and a detection limit of 6.2×10 -7 mol L -1 . The sensor response is independent of the pH of the solution in the pH range of 2.5 -7.0. The sensor possesses the advantages of short conditioning time, fast response time (<20 s), and especially, very good selectivity towards transition and heavy metal, and some mono, di and trivalent cations. The electrode can be used for at least 9 weeks without any considerable divergence in the potentials. The proposed electrode was successfully applied to the determination of copper in wastewater of copper electroplating samples and as an indicator electrode in potentiometric titration of Ca(II) ions with EDTA.Keywords: potentiometry, copper sensor, PVC membrane, 4-amino-6-methyl-1,2,4-triazin-5-one-3-thione IntroductionDuring the last decade, there has been a renewed resurgence in developing potentiometric membrane electrodes as devices for rapid, accurate, low cost and non destructive analysis of different samples with small volume samples.Due to the necessary need for selective copper measurements in many copmplex biological systems, 1,2 geochemical, 3 environmental, medicinal and industrial samples, 4 the search for new selective and sensitive PVCmembrane electrodes for its quick measurement is still a challenging goal. We have recently reported a number of highly selective and sensitive membrane sensors for various metal ions. [23][24][25] In this paper, we wish to introduce a highly copper(II)-selective sensor based on 4-Amino-6-methyl-1,2,4-triazin-5-one-3-thione (AMTOT), as a novel neutral ionophore for monitoring of copper in industrial samples (Figure 1). Experimental ReagentsReagent grade 2-nitrophenyl octyl ether (NPOE), dibutyl phthalate (DBP), benzyl acetate (BA), nitrobenzene (NB), sodium tetraphen...

show abstract

“…[38][39][40][41] In Table 4, the selectivity coefficients for some common interfering ions of the proposed ions-selective electrodes based on AQ are compared with the corresponding values previously reported for PVC-membrane copper(II)-selective electrodes based on different neutral ionophores. [10][11][12][13][15][16][17] As can be seen, in most cases, the proposed electrodes (especially the CGE) show superior selectivity behavior to the PVC membrane sensors prepared previously. Moreover, the limit of detection obtained with the proposed CGE shows an improvement of over one order of magnitude over the most sensitive copper-selective 878 ANALYTICAL SCIENCES AUGUST 2002, VOL.…”

Section: Potmentioning

confidence: 99%

A 9,10-Anthraquinone Derivative Having Two Propenyl Arms as a Neutral Ionophore for Highly Selective and Sensitive Membrane Sensors for Copper(II) Ion

Shamsipur

Avanes²,

Javanbakht

et al. 2002

ANAL. SCI.

Self Cite

View full text Add to dashboard Cite

The quick determination of trace quantities of cationic species by simple methods is of vital importance in chemical, environmental and industrial analyses. Potentiometric sensors based on solvent polymeric membranes with the incorporation of neutral ionophores have been shown to be very useful tools for these purposes, due to their ease of preparation, simple operation, relatively fast response, reasonable selectivity, wide linear dynamic range and low cost. [1][2][3][4][5] Due to the urgent need for selective copper determinations in many biological, 6,7 geochemical, 8 environmental and industrial samples, 9 the search for new sensitive and selective polymeric membrane sensors for its fast monitoring is still a challenging objective. 4 19 In recent years, we have successfully employed a number of new 9,10-anthraquinone derivatives as very suitable ion carriers in bulk liquid membrane transport 20 and the solid-phase extraction of metal ions, 21,22 in constructing of PVC-membrane ion-selective electrodes [23][24][25] and in stripping voltammetric analysis of lead ion. 26 In this paper we report on highly selective and sensitive solvent polymeric membrane (PME) and membrane-coated graphite electrodes (CGE) for Cu 2+ ion based on 1-hydroxy-2-(prop-2′-enyl)-4-(prop-2′-enyloxy)-9,10-anthraquinone (AQ), recently synthesized in our laboratories, 27 that manifest the properties of an excellent neutral ionophore for copper(II) ions. Experimental ReagentsReagent-grade 2-nitrophenyl octyl ether (NPOE), benzyl acetate (BA) sodium tetraphenylborate (NaTPB), oleic acid (OA), high relative molecular weight PVC and tetrahydrofuran (THF) were purchased from Merck chemical company and used as received. The nitrate salts of the cations used (all from Merck) were of the highest purity available, and used without any further purification, except for vacuum drying over P2O5. Anthraquinone AQ was synthesized and purified as described New polymeric membrane (PME) and coated graphite (CGE) copper(II)-selective electrodes based on 1-hydroxy-2-(prop-2′-enyl)-4-(prop-2′-enyloxy)-9,10-anthraquinone were prepared. The electrodes reveal linear emf-pCu 2+ responses over wide concentration ranges (1.0 × 10 -5 -1.0 × 10 -1 M with a slope of 27.3 mV decade -1 for PME and 8.0 × 10 -8 -5.0 × 10 -2 M with a slope of 29.1 mV decade -1 for CGE) and very low limits of detection (8.0 × 10 -6 M for PME and 5.0 × 10 -8 M for CGE). The potentiometric response is independent of the pH of the test solution in the pH range 3.0 -6.0. The proposed electrodes possess very good selectivities over a wide variety of other cations, including alkali, alkaline earth, transition and heavy metal ions, the selectivity coefficients for the CGE being much improved over those for the PME. The electrodes were used as indicator electrodes in the potentiometric titration of Cu 2+ and in the recovery of copper ions from wastewater.

show abstract

Copper(II)-Selective Membrane Electrode Based on a Recently Synthesized Macrocyclic Diamide

Cited by 75 publications

References 42 publications

A New PVC-Membrane Electrode Based on a Thia-Substituted Macrocyclic Diamide for Selective Potentiometric Determination of Silver Ion

A New PVC-Membrane Electrode Based on a Thia-Substituted Macrocyclic Diamide for Selective Potentiometric Determination of Silver Ion

Synthesis of 4-amino-6-methyl-1,2,4-triazin-5-one-3-thione and its application in construction of a highly copper(II) ion-selective electrochemical sensor

A 9,10-Anthraquinone Derivative Having Two Propenyl Arms as a Neutral Ionophore for Highly Selective and Sensitive Membrane Sensors for Copper(II) Ion

Contact Info

Product

Resources

About